Prospect Global Resources (PGRX) S-1/A 30 Jan 14 IPO registration (amended) Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Sep. 30, 2013
Document and Entity Information	'
Entity Registrant Name	'PROSPECT GLOBAL RESOURCES INC.
Entity Central Index Key	'0001477032
Document Type	'S-1/A
Pre-Effective Amendment Number	'3
Document Period End Date	30-Sep-13
Amendment Flag	'true
Amendment Description	'This amendment is being filed to respond to comments from the SEC staff on the registration statement.
Entity Filer Category	'Smaller Reporting Company

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2013		Mar. 31, 2013
In Thousands, unless otherwise specified
Current assets	'		'
Cash and cash equivalents	$2,514		$1,024
Restricted cash	353		'
Related party receivable	25		25
Other current assets	321		1,165
Total current assets	3,213		2,220
Noncurrent assets	'		'
Land	399		380
Mineral properties	13,690		13,690
Equipment (net of accumulated depreciation of $230 and $132, respectively)	445		613
Other long-term assets	350		104
Total noncurrent assets	14,884		14,787
Total assets	18,097		17,007
Current Liabilities	'		'
Accounts payable and accrued liabilities	4,628		14,607
Grandhaven option	4,060		4,060
Current portion of long-term debt	'		122,032
Tax compensation on note payable (Note 9)	1,164		6,226
Derivative warrant liabilities (Note 13)	17,055		4,060
Total current liabilities	26,907		146,925
Noncurrent liabilities	'		'
Tax compensation on note payable (Note 9)	16,465		'
Long-term debt (net of unamortized discount of $26,329 and nil, respectively) (Note 9)	97,893		'
Accrued interest	10,730		'
Other long-term liabilities	720		'
Total noncurrent liabilities	125,808		'
Total liabilities	152,715		146,925
Commitments and Contingencies (Note 17)	'		'
Redeemable Preferred Stock: $0.001 par value; 100,000,000 shares authorized; 15,000,000 shares outstanding with a liquidation preference of $15,000,000 and nil at September 30, 2013 and March 31, 2013, respectively (Note 10)	5,646		'
EQUITY (1)	'		'
Common stock: $0.001 par value; 300,000,000 shares authorized; 4,174,039 and 1,451,914 issued and outstanding at September 30, 2013 and March 31, 2013, respectively	4	[1]	1	[1]
Additional paid-in capital	37,330	[1]	30,335	[1]
Losses accumulated in the exploration stage	-177,598	[1]	-160,254	[1]
Total shareholders' deficit	-140,264	[1]	-129,918	[1]
Total liabilities, redeemable preferred stock and shareholders' deficit	$18,097		$17,007
[1]	All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2013	Mar. 31, 2013
CONSOLIDATED BALANCE SHEETS	'	'
Equipment, accumulated depreciation (in dollars)	$230,000	$132,000
Unamortized discount, Noncurrent	26,329,000	'
Redeemable Preferred Stock, par value (in dollars per share)	$0.00	$0.00
Redeemable Preferred Stock, shares authorized	100,000,000	100,000,000
Redeemable Preferred Stock, shares outstanding	15,000,000	'
Redeemable Preferred Stock, liquidation preference	$15,000,000	'
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	4,174,039	1,451,914
Common stock, shares outstanding	4,174,039	1,451,914

CONSOLIDATED_STATEMENT_OF_OPER

CONSOLIDATED STATEMENT OF OPERATIONS (USD $)	3 Months Ended				6 Months Ended				38 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013
Expenses:	'		'		'		'		'
Exploration	$2,859		$5,802		$4,071		$11,370		$29,294
General and administrative	2,261		9,628		4,355		13,888		65,540
Off-take arrangement fee (Note 7)	-438		'		-438		'		7,313
Warrant expense	1,750		5,619		5,051		5,619		11,017
Total expenses	6,432		21,049		13,039		30,877		113,164
Loss from operations	-6,432		-21,049		-13,039		-30,877		-113,164
Other income (expense):	'		'		'		'		'
Derivative gains (losses)	-1,388		'		1,512		'		-55,154
Gain/(loss) on extinguishments	-1,740		'		11,374		'		9,374
Write-down of assets	-579		'		-581		'		-581
Interest, net	-8,222		-1,871		-16,610		-1,871		-25,910
Total other expenses	-11,929		-1,871		-4,305		-1,871		-72,271
Net loss	-18,361		-22,920		-17,344		-32,748		-185,435
Net loss attributable to non-controlling interest	'		813		'		4,070		7,837
Net loss attributable to Prospect Global Resources Inc.	($18,361)		($22,107)		($17,344)		($28,678)		($177,598)
Earnings per share Basic and diluted	'		'		'		'		'
Loss per share (in dollars per share)	($6.77)	[1]	($20.21)	[1]	($8.24)	[1]	($30.41)	[1]	($152.06)	[1]
Weighted average number of shares outstanding (in shares)	2,737		1,094		2,124		943		1,169
[1]	All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.

CONSOLIDATED_STATEMENT_OF_OPER1

CONSOLIDATED STATEMENT OF OPERATIONS (Parenthetical)	0 Months Ended
	Sep. 04, 2013
CONSOLIDATED STATEMENT OF OPERATIONS	'
Reverse stock split	0.02

CONSOLIDATED_STATEMENT_OF_CASH

CONSOLIDATED STATEMENT OF CASH FLOWS (USD $)	6 Months Ended	38 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
CASH FLOWS USED IN OPERATING ACTIVITIES:	'	'
Net loss	($17,344,000)	($185,435,000)
Adjustments to reconcile net loss to net cash used in operating activities:	'	'
Services paid for with stock	538,000	7,572,000
Apollo fees paid with promissory note	'	6,750,000
Derivative (gains) losses	-1,512,000	55,154,000
Gain on debt extinguishment	-11,774,000	-9,774,000
Impairment of assets	581,000	581,000
Stock-based compensation	175,000	20,165,000
Warrant expense	5,051,000	11,017,000
Interest expense	8,350,000	17,649,000
Amortization of debt discount	8,199,000	8,199,000
Amortization of deferred financing costs	62,000	62,000
Karlsson Group tax compensation	'	6,226,000
Depreciation	109,000	223,000
Changes in operating assets and liabilities:	'	'
Other current assets	342,000	-424,000
Accounts payable and accrued liabilities	-1,964,000	5,404,000
Change in derivative warrant liabilities	-806,000	-806,000
Change in other long-term assets	-299,000	-298,000
Change in other long-term liabilities	70,000	70,000
Net cash used in operating activities	-10,222,000	-57,665,000
CASH FLOWS USED IN INVESTING ACTIVITIES:	'	'
Mineral properties	'	-2,690,000
Land acquisitions	-19,000	-399,000
Increase in restricted cash	-353,000	-353,000
Equipment acquisitions	-23,000	-749,000
Net cash used in investing activities	-395,000	-4,191,000
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Proceeds from convertible notes	5,000,000	14,049,000
Merkin note amendment	'	-2,000,000
Karlsson Note principal payments	'	-9,718,000
Net Proceeds from common stock issued	7,107,000	87,039,000
Cash paid for non-controlling interest acquisition	'	-25,000,000
Net cash provided by financing activities	12,107,000	64,370,000
Net increase (decrease) in cash and cash equivalents	1,490,000	2,514,000
Cash and cash equivalents- beginning of period	1,024,000	'
Cash and cash equivalents - end of period	2,514,000	2,514,000
Supplemental disclosure of non-cash transactions:	'	'
Convertible notes and accrued interest converted into shares of common stock	'	-9,493,000
Common stock attributable to reverse merger	'	2,000
Fair value of land contributed by non-controlling interest	'	-11,000,000
Note receivable in exchange for shares of common stock	'	-1,125,000
Grandhaven Option, net of $25,000 receivable	'	4,036,000
Non-controlling interest acquisition	'	500,000
SK Land Holdings Option	-500,000	'
Preferred stock into common stock and warrants	2,276,000	'
Embedded derivative liability (non-current)	650,000	650,000
Buffalo revenue interest exchange	8,712,000	8,712,000
Temporary Equity (Preferred Stock)	'	'
Supplemental disclosure of non-cash transactions:	'	'
Convertible note into preferred stock	5,439,000	5,439,000
Preferred stock into common stock and warrants	($5,439,000)	($5,439,000)

CONSOLIDATED_STATEMENT_OF_CASH1

CONSOLIDATED STATEMENT OF CASH FLOWS (Parenthetical) (USD $)	6 Months Ended		12 Months Ended		38 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2013	Mar. 31, 2012	Sep. 30, 2013
CONSOLIDATED STATEMENT OF CASH FLOWS	'	'	'	'	'
Grandhaven Option, receivable	$25,000	$25,000	$25,000	$25,000	$25,000

CONSOLIDATED_STATEMENT_OF_SHAR

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (DEFICIT) (USD $)		Total	Preferred Stock	Common Stock		Additional Paid-in Capital		Losses Accumulated in the Exploration Stage	Non-Controlling Interest	Temporary Equity (Preferred Stock)
In Thousands, except Share data, unless otherwise specified		USD ($)		USD ($)		USD ($)		USD ($)	USD ($)	USD ($)
Balance at Aug. 04, 2010		'	'	'		'		'	'	'
Increase (Decrease) in Shareholders' Equity		'	'	'		'		'	'	'
Stock issued in private placements		$54	'	'		$54		'	'	'
Stock issued in private placements (in shares)		'	'	328,273		'		'	'	'
Contributions		11,000	'	'		'		'	11,000	'
Stock issued for services		316	'	'		316		'	'	'
Stock issued for services (in shares)		'	'	42,833		'		'	'	'
Stock-based compensation		1	'	'		1		'	'	'
Stock-based compensation (in shares)		'	'	17,000		'		'	'	'
Stock acquired through merger (in shares)		'	'	34,700		'		'	'	'
Convertible notes and accrued interest converted into common stock		1,076	'	'		1,076		'	'	'
Convertible notes and accrued interest converted into common stock (in shares)		'	'	7,171		'		'	'	'
Net loss		-17,209	'	'		'		-16,834	-375	'
Balance (in shares) at Mar. 31, 2011	[1]	'	'	429,977		'		'	'	'
Balance at Mar. 31, 2011		-4,762	'	'		1,447	[1]	-16,834	10,625	'
Balance at Aug. 04, 2010		'	'	'		'		'	'	'
Increase (Decrease) in Shareholders' Equity		'	'	'		'		'	'	'
Debt to preferred stock conversion		'	'	'		'		'	'	5,439
Exchange of preferred stock for common stock and warrants (Note 10)		'	'	'		'		'	'	-5,439
Net loss		-185,435	'	'		'		'	'	'
Balance (in shares) at Sep. 30, 2013		15,000,000	'	'		'		'	'	'
Balance at Sep. 30, 2013		-140,264	'	'		'		'	'	5,646
Balance at Aug. 05, 2010		'	'	'		'		'	'	'
Increase (Decrease) in Shareholders' Equity		'	'	'		'		'	'	'
Stock issued in private placements		54	'	'		54	[1]	'	'	'
Stock issued in private placements (in shares)	[1]	'	'	328,273		'		'	'	'
Contributions		11,000	'	'		'		'	11,000	'
Stock issued for services		316	'	'		316	[1]	'	'	'
Stock issued for services (in shares)	[1]	'	'	42,833		'		'	'	'
Stock-based compensation		1	'	'		1	[1]	'	'	'
Stock-based compensation (in shares)	[1]	'	'	17,000		'		'	'	'
Stock acquired through merger (in shares)	[1]	'	'	34,700		'		'	'	'
Convertible notes and accrued interest converted into common stock		1,076	'	'		1,076	[1]	'	'	'
Convertible notes and accrued interest converted into common stock (in shares)	[1]	'	'	7,171		'		'	'	'
Net loss		-17,209	'	'		'		-16,834	-375	'
Balance (in shares) at Mar. 31, 2011	[1]	'	'	429,977		'		'	'	'
Balance at Mar. 31, 2011		-4,762	'	'		1,447	[1]	-16,834	10,625	'
Increase (Decrease) in Shareholders' Equity		'	'	'		'		'	'	'
Stock issued in private placements		13,972	'	'		13,972	[1]	'	'	'
Stock issued in private placements (in shares)	[1]	'	'	85,552		'		'	'	'
Stock issued for services		2,061	'	'		2,061	[1]	'	'	'
Stock issued for services (in shares)	[1]	'	'	10,000		'		'	'	'
Stock-based compensation		9,717	'	'		9,717	[1]	'	'	'
Stock-based compensation (in shares)	[1]	'	'	14,000		'		'	'	'
Convertible notes and accrued interest converted into common stock		64,800	'	'		64,800	[1]	'	'	'
Convertible notes and accrued interest converted into common stock (in shares)	[1]	'	'	250,254		'		'	'	'
Net loss		-66,957	'	'		'		-63,566	-3,391	'
Balance (in shares) at Mar. 31, 2012	[1]	'	'	789,783		'		'	'	'
Balance at Mar. 31, 2012		18,831	'	'		91,997	[1]	-80,400	7,234	'
Increase (Decrease) in Shareholders' Equity		'	'	'		'		'	'	'
Stock issued in private placements		1,000	'	'		1,000	[1]	'	'	'
Stock issued in private placements (in shares)	[1]	'	'	4,706		'		'	'	'
Stock issued for services		4,652	'	'		4,652	[1]	'	'	'
Stock issued for services (in shares)	[1]	'	'	40,425		'		'	'	'
Non-controlling interest acquisition		-182,219	'	'		-179,056	[1]	'	-3,163	'
Karlsson Group warrant issuance		34,620	'	'		34,620		'	'	'
Stock issued in public offerings		66,290	'	1	[1]	66,289	[1]	'	'	'
Stock issued in public offerings (in shares)	[1]	'	'	608,000		'		'	'	'
Cost of public offerings		-5,406	'	'		-5,406	[1]	'	'	'
Stock-based compensation		16,239	'	'		16,239	[1]	'	'	'
Stock-based compensation (in shares)	[1]	'	'	9,000		'		'	'	'
Net loss		-83,925	'	'		'		-79,854	-4,071	'
Balance (in shares) at Mar. 31, 2013	[1]	'	'	1,451,914		'		'	'	'
Balance (in shares) at Mar. 31, 2013		'	'	'		'		'	'	'
Balance at Mar. 31, 2013		-129,918	'	1	[1]	30,335	[1]	-160,254	'	'
Increase (Decrease) in Shareholders' Equity		'	'	'		'		'	'	'
Stock issued for services		1,538	'	'		1,538	[1]	'	'	'
Stock issued for services (in shares)	[1]	'	'	230,123		'		'	'	'
Karlsson Group warrant issuance		190	'	'		190		'	'	'
Very Hungry warrant issuance		1,715	'	'		1,715		'	'	'
Stock issued in public offerings		805	'	2	[1]	803	[1]	'	'	'
Stock issued in public offerings (in shares)	[1]	'	'	1,575,334		'		'	'	'
Cost of public offerings		-790	'	'		-790	[1]	'	'	'
Debt to preferred stock conversion		'	'	'		'		'	'	5,439
Debt to preferred stock conversion (in shares)		'	5,500,000	'		'		'	'	'
Exchange of preferred stock for common stock and warrants (Note 10)		2,276	'	1		2,275	[1]	'	'	-5,439
Exchange of preferred stock for common stock and warrants (in shares) (Note 10)		'	-5,500,000	916,668		'		'	'	'
Preferred Stock		'	'	'		'		'	'	5,646
Preferred Stock (in shares)		'	15,000,000	'		'		'	'	'
Warrant reclass to liability		1,089	'	'		1,089	[1]	'	'	'
Stock-based compensation		175	'	'		175	[1]	'	'	'
Net loss		-17,344	'	'		'		-17,344	'	'
Balance (in shares) at Sep. 30, 2013	[1]	'	'	4,174,039		'		'	'	'
Balance (in shares) at Sep. 30, 2013		15,000,000	15,000,000	'		'		'	'	'
Balance at Sep. 30, 2013		($140,264)	'	$4	[1]	$37,330	[1]	($177,598)	'	$5,646
[1]	All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.

CONSOLIDATED_STATEMENT_OF_SHAR1

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (DEFICIT) (Parenthetical)	0 Months Ended
	Sep. 04, 2013
CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (DEFICIT)	'
Reverse stock split	0.02

Organization_and_Business_Oper

Organization and Business Operations	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Organization and Business Operations	'	'
Organization and Business Operations	'	'
	Note 1 — Organization and Business Operations	Note 1—Organization and Business Operations
	Prospect Global is an exploration stage company engaged in the exploration of a potash deposit located in the Holbrook Basin of eastern Arizona, which we refer to as the Holbrook Project. We hold our interest in and control the Holbrook Project through our wholly owned subsidiary AWP.	Introduction
	Between January and November 2011, we invested $11.0 million dollars in AWP and the Karlsson Group contributed to AWP its ownership of mineral rights on eight private sections and potash exploration permits on 42 Arizona state sections, comprising a total of approximately 31,000 gross acres in the Holbrook Basin, for a 50% ownership interest in AWP. In July 2011, AWP entered into a Potash Sharing Agreement covering 101 private mineral estate sections and related mineral leases on approximately 62,000 acres adjacent to or in close proximity to AWP’s existing mineral rights.  On August 1, 2012 we purchased the Karlsson Group’s 50% interest in AWP and became the sole owner and operator of AWP.   As of September 30, 2013, we held exploration permits on 38 Arizona State sections and 101 private sections.	Prospect Global Resources Inc., a Nevada corporation (individually or in any combination with its subsidiaries, “Prospect,” the “Company,” “we,” “us,” or “our”), is an exploration stage company engaged in the exploration and development of a potash deposit located in the Holbrook Basin of eastern Arizona, which we refer to as the Holbrook Project.
		We were incorporated in the state of Nevada on July 7, 2008 while our wholly owned subsidiary, Old Prospect Global, was incorporated in the state of Delaware on August 5, 2010. We hold our interest in and control the Holbrook Project through our ownership of our wholly owned subsidiary, American West Potash LLC or AWP.
		Between January and November 2011, we invested $11.0 million dollars in AWP and another party, The Karlsson Group Inc., contributed to AWP its ownership of mineral rights on eight private sections and potash exploration permits on 42 Arizona state sections, comprising a total of approximately 31,000 gross acres in the Holbrook Basin, for a 50% ownership interest in AWP. In July 2011, AWP entered into a Sharing Agreement covering 101 private mineral estate sections and related mineral leases on approximately 62,000 acres adjacent to or in close proximity to AWP’s existing mineral rights.  On August 1, 2012 we purchased The Karlsson Group’s 50% interest in AWP and became the sole owner and operator of AWP.
		American West Potash LLC
		AWP commenced operations on January 21, 2011, the date on which the Company and The Karlsson Group executed the Third Amended and Restated Operating Agreement (the “Operating Agreement”). Through AWP, we hold potash exploration permits on 38 Arizona state sections, own the mineral rights on eight private sections and hold leases for the mineral rights on 101 private sections which, in total, cover approximately 90,000 acres. The state permits are for five year terms, of which 15 expire in 2014 and 23 expire in 2015. The private leases shall continue as long as AWP performs exploration or development activity.
		During calendar year 2011, AWP acquired approximately 70 miles of 2D seismic data and completed the drilling and coring of 12 holes. The results from the seismic data and the drilling helped delineate the potash resource potential on AWP’s acreage and supported the completion of the Resource Calculation and PEA. This was combined with the historic information of approximately 58 holes in our project area. Due to the relatively shallow depth of the deposit, AWP plans to mine the potash employing conventional underground mining techniques.
		On July 27, 2011, AWP entered into a Sharing Agreement covering 101 private mineral estate sections and related mineral leases on approximately 62,000 acres adjacent to or in close proximity to its existing mineral rights covering 50 mineral estate sections in the Holbrook Basin of eastern Arizona. This Sharing Agreement provides that AWP will pay the mineral estate owners specified dollar amounts during development of AWP’s mining and processing facility, an annual base rent and a royalty for potash extracted from these estates. The term of the Sharing Agreement is for perpetuity or until the earliest of cessation of operations by AWP for 180 consecutive days or abandonment of the potash mining operation by AWP. The owners of the mineral estates can also terminate the agreement upon specified defaults by AWP, some following cure periods.
		Change in Fiscal Year End
		On March 20, 2012 the Company’s board of directors resolved to change the Company’s fiscal year end from December 31 to March 31, commencing with the 12 month period ending March 31, 2012.  As a result of this change, the Company filed a transition report on Form 10-K for the three-month transition period ended March 31, 2012. References to any of our fiscal years mean the fiscal year ending March 31 of that calendar year.
		Short-Term Liquidity and Capital Needs
		As of March 31, 2013, we had approximately $1.0 million in cash and a working capital deficit of $144.7 million, including accounts payable and accrued liabilities of $14.6 million and indebtedness of $128.3 million. Subsequent to year-end and as a result of not being able to service this debt, we entered into debt restructurings on April 15, 2013 and June 26, 2013 that extended the due dates of this debt in exchange for certain other considerations and concessions. Refer to Note 18 — Subsequent Events of the accompanying consolidated financial statements for additional information.
		As part of the Second Extension Agreement, we are required to meet the following development milestones:
		(i)       Complete total depth on at least eight wells on or before November 1, 2013,
		(ii)      Deliver a completed and updated final NI 43-101 resource report on or before February 1, 2014,
		(iii)     Deliver completed metallurgical and rock mechanic test work results that will be used to complete the mine and processing plant designs for the definitive feasibility study on or before June 1, 2014, and
		(iv)     Deliver a completed and published definitive feasibility study on or before December 31, 2014.
		In addition, under the terms of the Second Extension Agreement we are required to deposit 50% of the net proceeds of the next $24.0 million of capital we raise (for a total of $12.0 million) into escrow for Holbrook Project expenses. Two million dollars of the proceeds we received from our recent $5.0 million public offering (refer to Note 18—Subsequent Events of the accompanying consolidated financial statements) were placed into this escrow, reducing our remaining escrow obligation to $10.0 million. We are also required to pay 10% of all capital raised going forward to Karlsson and Apollo as payments on their respective promissory notes. If we do not meet any one of the required development milestones, Karlsson will be entitled to foreclose on the collateral securing the Karlsson Note, which could result in a sale of AWP or its assets to satisfy amounts owing on the note. Refer to Note 18—Subsequent Events of the accompanying consolidated financial statements for further information.
		As of July 1, 2013, we had $1.4 million of available cash (excluding the escrowed cash of approximately $2.4 million which must be used for specified purposes related to the Holbrook Project pursuant to the restructured Karlsson Note), which includes the $4.1 million of net proceeds received from the public offering that closed on June 26, 2013. We will need to raise additional capital beyond what has already been raised to complete the development milestones in the Extension Agreement. If we are unable to raise the necessary funds to satisfy these development milestones, we will consider all available options, including the filing of a voluntary bankruptcy.
		The accompanying consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and liquidation of liabilities in the ordinary course of business.
		At March 31, 2013, the Company has not generated any revenues to fund operations.  The continuation of the Company as a going concern is dependent upon the efforts of the Company to raise additional capital and meet operational and corporate requirements. As disclosed within these financial statements, the capital required to meet these requirements could be substantial and will require the issuance of additional debt and/or equity securities.  These requirements and potential lack of available funding raise substantial doubt as to the Company’s ability to continue as a going concern.  The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Liquidity_Capital_Requirements

Liquidity, Capital Requirements and Debt Restructurings	6 Months Ended
	Sep. 30, 2013
Liquidity, Capital Requirements and Debt Restructurings	'
Liquidity, Capital Requirements and Debt Restructurings	'
	Note 2 — Liquidity, Capital Requirements and Debt Restructurings
	As of November 13, 2013, we had approximately $0.6 million of cash available for general corporate purposes, which is less than the $1.2 million we owe to the Karlsson Group on November 15, 2013. We will also owe the Karlsson Group another $1.2 million payment on February 10, 2014. We are currently in the process of raising additional capital to avoid defaulting on our debt with the Karlsson Group.
	Our debt to the Karlsson Group including principal, accrued interest and compensation for tax matters totaled approximately $145.4 million at September 30, 2013.  A default on the Karlsson Group debt would also cause a default on our $7.2 million of Apollo debt. If we are unable to raise sufficient funds or receive a waiver for such payment from the Karlsson Group before November 15, 2013, we would likely voluntarily file for bankruptcy before allowing any of our lenders to initiate foreclosure proceedings.  A default on the Karlsson Group debt would cause all of our $152.6 million in debt to become immediately due and payable.
	Our current cash situation has slowed the exploration of our Holbrook Project. We need significant amounts of cash to further develop the Holbrook Project. A failure to raise the capital required for this development would result in a delay or indefinite postponement of further exploration work and the potential loss of our interests in the Holbrook Project.
	If we are able to avoid defaulting on our debt, we will continue our capital raising and debt restructuring efforts. These capital requirements and the potential lack of available funding raise substantial doubt as to the Company’s ability to continue as a going concern. The consolidated financial statements included herein reflect the Company continuing as a going concern.

Summary_of_Significant_Account

Summary of Significant Accounting Principles	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Summary of Significant Accounting Principles	'	'
Summary of Significant Accounting Principles	'	'
	Note 3—Summary of Significant Accounting Principles	Note 2—Summary of Significant Accounting Principles
	This summary of significant accounting policies of the Company is intended to assist readers in understanding the Company’s financial statements. The financial statements and notes are representations of the Company’s management, which is responsible for their integrity and objectivity.	This summary of significant accounting policies of the Company is presented to assist in understanding the Company’s financial statements. The financial statements and notes are representations of the Company’s management, which is responsible for their integrity and objectivity.
	Basis of Presentation	Basis of Presentation
	The accompanying unaudited Interim Condensed Consolidated Financial Statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), the instructions to Form 10-Q and Article 10 of Regulation S-X. In management’s opinion, all of the normal and recurring adjustments necessary to fairly present the interim financial information set forth herein have been included. The results of operations for interim periods are not necessarily indicative of the operating results of a full year or of future years. These interim financial statements follow the same accounting policies and methods of their application as the most recent annual financial statements unless specifically discussed below. These interim financial statements are unaudited and should be read in conjunction with the Company’s audited financial statements and related footnotes for the year ended March 31, 2013 to be included in the Company’s Annual Report on Form 10-K/A to be filed with the SEC as soon as administratively possible.	The accompanying consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), the instructions to Form 10-K and applicable Articles of Regulation S-X. In the opinion of management, all of the normal and recurring adjustments necessary to fairly present the financial information set forth herein have been included.
	We have incurred net losses totaling $177.6 million since inception and at September 30, 2013 we had a working capital deficit $23.7 million.  These consolidated interim financial statements have been prepared on a going concern basis, which contemplates the realization of assets and settlement of liabilities in the normal course of business for the foreseeable future and do not give effect to any adjustments which would be necessary should the Company be unable to continue as a going concern.	Principles of Consolidation
	Use of Estimates	As of March 31, 2013, the Company was the 100% owner of Prospect Global Resources Inc., a Delaware corporation (“old Prospect Global”).  Old Prospect Global is a holding company and the 100% owner of AWP; and, therefore, the Company accordingly provides the consolidated financial statements for the Company, old Prospect Global and AWP.  The purpose of consolidated financial statements is to present the results of operations and the financial position of the Company and its subsidiaries as if the group were a single company. The Company has disclosed in the financial statements the amount of non-controlling interest attributable to The Karlsson Group (prior to the August 1, 2012 acquisition of the remaining 50% non-controlling interest) and has eliminated all intercompany gains and losses. All intercompany accounts and transactions have been eliminated in the consolidation.
	The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses incurred during the reporting period. The Company bases its estimates on various assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions.	Exploration Stage
	Mineral Properties	As of March 31, 2013, the Company was considered an exploration stage enterprise since none of the Company’s mineral properties had proven or probable reserves as determined under the requirements of SEC Industry Guide No. 7. Further analysis, including additional in-fill drilling and a definitive feasibility study, is required before any portion of the resource, if any, can potentially be upgraded to a proven or probable reserve status pursuant to SEC Industry Guide 7.
	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.	Use of Estimates
	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.	The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses incurred during the reporting period. The Company bases its estimates on various assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions. Significant estimates with regard to the Company’s consolidated financial statements include the fair value of mineral interests contributed by The Karlsson Group; the calculation of certain conversion features of the Company’s secured convertible notes; the embedded derivative liabilities associated with those secured convertible notes and the outstanding warrants issued by the Company (and the associated changes period to period); stock-based compensation; the liability associated with the Grandhaven Option; the fair market value of consideration associated with The Karlsson Group Acquisition and the Karlsson Note Tax Gross-Up (as defined in Note 8—Debt) amount.
	Allocation of Costs	Cash and Cash Equivalents
	From time to time our capital raise activities will result in the issuance of more than one security, such as shares of our common stock and warrants to purchase our common stock.  In these cases, we will allocate the costs of that capital raise between the various securities issued based on the relative fair value of each security issued.	Cash is comprised of cash deposits held at banks.  Cash equivalents are highly liquid investments with original maturities of three months or less.  As of March 31, 2013 and 2012, the Company had no cash equivalents. During the course of our operations, our balance of cash and cash equivalents held in bank accounts may exceed amounts covered by the Federal Deposit Insurance Corporation (FDIC).
	Recent Accounting Pronouncements	Equipment
	The Company has considered recently issued accounting pronouncements and does not believe that such pronouncements are of significance, or potential significance, to the Company.	Equipment is recorded at cost. Depreciation is calculated on the straight-line method over the estimated useful life of the assets. Estimated useful lives of assets currently held range from 2-10 years. The Company’s policy is to review equipment for impairment at least annually.
		Mineral Properties
		The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.
		In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.
		Exploration Expense
		Exploration expense includes geological and geophysical work performed on areas that do not yet have identified resources. These costs are expensed as incurred.
		Financial Instruments
		Prospect’s financial instruments consist of cash and cash equivalents, accounts receivable, notes payable, accounts payable, accrued liabilities, warrants and stock options. We carry cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and notes payable at historical costs; their respective estimated fair values approximate carrying values due to their current nature.
		We do not use derivative financial instruments to hedge exposures to cash flow, market or foreign-currency risks. However, we have in the past entered into certain financial instruments and contracts, such as convertible note financing arrangements and the Karlsson Note that contained embedded derivative features. The convertible note financing arrangements were carried as derivative liabilities, at fair value, in our financial statements until their conversion into common stock on November 22, 2011.
		Income Taxes
		The Company accounts for income taxes using the asset and liability method of accounting for deferred income taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases.
		A valuation allowance is required to the extent it is more-likely-than-not that a deferred tax asset will not be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date.
		The Company also reports taxes based on tax positions that meet a more-likely-than-not standard and that are measured at the amount that is more-likely-than-not to be realized. Differences between financial and tax reporting which do not meet this threshold are required to be recorded as unrecognized tax benefits. The Company classifies penalty and interest expense related to income tax liabilities as an income tax expense. There are no penalties or interest recognized in the statement of operations or accrued on the balance sheet.
		Loss per Share
		Basic loss per share of common stock is calculated by dividing net loss available to common stockholders by the weighted average number of common shares outstanding for the respective period. Diluted loss per common share reflects the potential dilution that would occur if contracts to issue common stock were exercised or converted into common stock. For the 12 months ended March 31, 2013 and 2012 and from August 5, 2010 (Inception) to March 31, 2013, basic loss per common share and diluted loss per common share were the same as any potentially dilutive shares would have been anti-dilutive to the periods. Refer to Note 15—Loss per Share for additional information.
		Equity-Based Compensation
		The Company recognizes compensation costs for share-based awards based on the estimated fair value of the employee awards on their grant date. The fair value of stock options is estimated using the Black-Scholes option pricing model. Compensation costs are recognized on a straight-line basis over each issuance’s respective vesting period.
		From time to time, the Company will issue share-based awards, including options and warrants, to non-employees. The fair value of these awards issued to non-employees (typically consultants) is measured on the earlier of the date the performance is complete or the date the consultant is committed to perform. In the event that the measurement date occurs after an interim reporting date, the awards are measured at their then-current fair value at each interim reporting date, estimated using the Black-Scholes pricing model. The fair value of these awards is expensed on a straight-line basis over the associated performance period.
		Warrants
		The Company classifies its issued and outstanding warrants as liabilities or equity in its financial statements, depending upon the criteria met and specific circumstances at a given point in time. Refer to Note 13—Equity Based Compensation and Note 14—Shareholders’ Equity for additional information.
		Recent Accounting Pronouncements
		The Company has considered recently issued accounting pronouncements and does not believe that such pronouncements are of significance, or potential significance, to the Company.

Restricted_Cash

Restricted Cash	6 Months Ended
	Sep. 30, 2013
Restricted Cash	'
Restricted Cash	'
	Note 4 — Restricted Cash
	Under the Karlsson debt agreement, we are required to deposit 50% of the net proceeds received from any future capital raises into escrow until we have escrowed an additional $9.4 million. These escrowed funds can only be used for Holbrook Project expenses.  As of September 30, 2013, we had approximately $0.4 million remaining in escrow, most of which has since been consumed to complete our in-fill drilling program and other related activities in the Holbrook Basin.

Other_Current_Assets

Other Current Assets	6 Months Ended					12 Months Ended
	Sep. 30, 2013					Mar. 31, 2013
Other Current Assets	'					'
Other Current Assets	'					'
	Note 5 — Other Current Assets					Note 4—Other Current Assets
	As of September 30, 2013 and March 31, 2013, our other current assets related to items such as insurance premiums, service contracts, rental agreements, property deposits and various other operating pre-payments.					In the normal course of business, the Company pays in advance for goods and/or services to be received in the future.  As of March 31, 2013, our prepaid balances related to items such as insurance premiums, service contracts, rental agreements and various other operating pre-payments.  The SK Land Holdings Option was acquired on August 1, 2012 as part of The Karlsson Group Acquisition and represents the estimated fair value of the land option acquired as part of this acquisition.
		September 30, 2013		March 31, 2013		As we expect to receive benefits from these payments within the next 12 months, they have been reflected as current assets on the balance sheet.
		(thousands)		(thousands)
		(unaudited)					March 31, 2013		March 31, 2012
	Prepaid insurance & rent	$	281	$	276		(thousands)		(thousands)
	Land purchase option	—		500		Prepaid insurance & rent	$	276	$	223
	Other	40		395		Other	389		605
	Total other current assets	$	321	$	1,171	SK Land Holdings Option	500		—
						Total other current assets	$	1,165	$	828

Mineral_Properties

Mineral Properties	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Mineral Properties	'	'
Mineral Properties	'	'
	Note 6—Mineral Properties	Note 5—Mineral Properties
	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties.	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.
	Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.
	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable.
	When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.

Offtake_arrangement_fee

Off-take arrangement fee	6 Months Ended
	Sep. 30, 2013
Off-take arrangement fee	'
Off-take arrangement fee	'
	Note 7 — Off-take arrangement fee
	We incurred a one-time $7.8 million fee to a third party for their assistance in securing an off-take agreement with Sichuan Chemical.  In July 2013, we entered into a letter agreement reducing the fees to be paid to the third party by $0.4 million and recognized a gain by the same amount. We expensed this arrangement fee when incurred.  See also Note 20 — Restatement.

Accounts_Payable_and_Accrued_L

Accounts Payable and Accrued Liabilities	6 Months Ended					12 Months Ended
	Sep. 30, 2013					Mar. 31, 2013
Accounts Payable and Accrued Liabilities	'					'
Accounts Payable and Accrued Liabilities	'					'
	Note 8 — Accounts Payable and Accrued Liabilities					Note 7— Accounts Payable and Accrued Liabilities
	Accounts payable and accrued liabilities at September 30, 2013 and March 31, 2013 were comprised of:					Accrued liabilities at March 31, 2013 and 2012 included:
		September 30, 2013		March 31, 2013			March 31, 2013		March 31, 2012
		(thousands)		(thousands)			(thousands)		(thousands)
		(unaudited)				Drilling/permitting	$	140	$	471
	Drilling/permitting	$	543	$	382	Mineral lease obligations	1,500		—
	Engineering	1,505		1,796		Legal	112		280
	Private leaseholder obligations	—		1,500		Vacation, bonuses and severance pay	982		27
	Legal	664		720		Board of Directors’ fees	125		—
	Board of Directors’ fees	—		125		Off-take arrangement fee	1,588		—
	Off-take arrangement fee	50		1,588		Interest on promissory notes	7,229		—
	Accrued interest	—		7,251		Other	82		66
	Compensation and other	1,866		1,245		Total accrued liabilities	$	11,758	$	844
	Total accounts payable and accrued liabilities	$	4,628	$	14,607
						The $1.5 million mineral lease obligation relates to amounts due various owners of private sections in accordance with the Sharing Agreement.  The off-take arrangement fee is the remainder of a one-time fee due to a third-party consulting group.  The interest on promissory notes is comprised of the interest owing under the Karlsson and Apollo notes, all of which is payable within the next 12 months. Refer to Note 8—Debt and Note 18—Subsequent Events for additional information.
	Drilling/permitting and engineering costs are expensed when incurred and are associated with the Holbrook Project. The accrued interest at March 31, 2013 related to the Karlsson and Apollo notes was moved to non-current liabilities with the restructuring of the respective notes in April 2013.

Debt_and_Tax_Compensation_on_N

Debt and Tax Compensation on Note Payable

6 Months Ended

12 Months Ended

Sep. 30, 2013

Mar. 31, 2013

Debt

'

'

Debt and Tax Compensation on Note Payable

'

'

Note 9 — Debt and Tax Compensation on Note Payable

Note 8 — Debt

As of September 30, 2013 our indebtedness was $141.9 million or $152.6 million including the $10.7 million of accrued interest.

Prospect’s debt consists of the following:

September 30, 2013

March 31, 2013

March 31, 2013

March 31, 2012

(thousands)

(thousands)

(thousands)

(thousands)

(unaudited)

Karlsson senior secured note

$

115,282

$

—

Karlsson senior secured note

$

117,472

$

115,282

Apollo unsecured notes

6,750

—

Apollo unsecured notes

6,750

6,750

Tax gross-up on Karlsson senior secured note

6,226

—

Tax compensation on Karlsson senior secured note

17,629

6,226

Total debt

128,258

—

Total debt and tax compensation

141,851

128,258

Less: current portion

(128,258

)

—

Less: Unamortized debt discount*

(26,329

)

—

Total long-term debt

$

—

$

—

Less: current portion of debt and tax compensation

(1,164

)

(128,258

)

Total long-term debt and tax compensation

$

114,358

$

—

Karlsson Note

* Includes gross discount on the Karlsson Note of $34,528, net of amortized discount of $8,199.

We issued The Karlsson Group a $125.0 million senior first priority secured promissory note at the closing of The Karlsson Group Acquisition on August 1, 2012 which bears interest at 9% per annum and which is payable on each principal payment date.  Pursuant to the terms of this note, we made principal payments totaling $9.7 million in November 2012 equal to 40% of the net proceeds received from our November equity offering.  The remaining principal balance of $115.3 million was due to have been repaid in two installments with the balance of the first installment or $40.3 million having been due on March 30, 2013 and the second installment of $75.0 million having a due date of July 31, 2013.  Unable to raise sufficient funds to repay the amounts due under the Karlsson Note on March 30, 2013, we entered into an Extension Agreements with The Karlsson Group on April 15, 2013 and June 26, 2013 that, among other things, extended the due date of the Karlsson Note. Refer to Note 18—Subsequent Events for additional information.

Karlsson Group Senior Secured Note

In addition to the mandatory prepayments equal to 40% of the net proceeds received by the Company from any equity or debt raise completed before the Karlsson Note has been repaid in full, the Karlsson Note is also mandatorily pre-payable within five business days of a sale of at least 50% of AWP or a merger of AWP with or into an unaffiliated entity. The Karlsson Note is guaranteed by AWP and is secured by (a) a pledge by Old Prospect and (b) a lien over all the assets of Old Prospect and AWP.  Certain of these provisions were revised subsequent to year-end by the Extension Agreement.  Refer to Note 18—Subsequent Events for additional information.

We issued the Karlsson Group a $125.0 million senior first priority secured promissory note on August 1, 2012 as partial consideration for the acquisition of their 50% interest in AWP.  We also agreed to compensate the Karlsson Group for increases in certain federal and state income taxes and other tax related matters.  All amounts owing to the Karlsson Group are secured by a lien on all the assets of AWP, a pledge of the capital stock of our subsidiary companies and a payment guarantee from Prospect Global.

Including the tax gross-up (see below), accrued interest and the remaining unpaid principal balance, we owed The Karlsson Group approximately $128.7 million as of March 31, 2013, all of which is reflected in current liabilities at March 31, 2013.

This note bears interest at 9% and is payable quarterly in-kind by an increase to the note’s outstanding principal balance.  Principal and interest are due on the earlier of July 1, 2015 or 12 months following the completion of our Definitive Feasibility Study.

Karlsson Note Tax Gross-Up

The principal balance, accrued interest and compensation for tax matters totaled approximately $145.4 million as of September 30, 2013, of which $1.2 million for tax compensation matters is due on or before November 15, 2013 and is included in current liabilities. If no principal payments are made between now and December 31, 2013 we would owe the Karlsson Group an additional $1.2 million of principal on February 10, 2014.

On December 24, 2012, we also became obligated to pay The Karlsson Group a tax gross-up as compensation for deferring the repayment date of the first Karlsson Note installment from December 24, 2012 to March 30, 2013, with the tax gross-up also payable on March 30, 2013.  We estimated this tax gross-up to be $6.2 million in accordance with the Karlsson Note terms.  However, this amount is subject to adjustment should retrospective tax changes occur prior to payment of this gross-up.  In accordance with accounting guidance related to contingent liabilities, the additional expense associated with the obligation to pay the tax gross-up has been included as a component of loss from operations.  This tax gross provision was subsequently modified and expanded in connection with the Extension Agreement entered into on April 15, 2013.  Refer to Note 18—Subsequent Events for additional information.

We are required to prepay the Karlsson Note with 10% of the gross proceeds from any future capital raises until the Karlsson Note has been paid in full. The Karlsson Note is also mandatorily pre-payable within five business days of a sale of at least 50% of AWP or a merger of AWP with or into an unaffiliated entity.

Karlsson Note Prepayment Option

Debt covenant requirements

Pursuant to the terms of the Karlsson Note, if Prospect had paid $100.0 million of principal on or before December 15, 2012, plus all accrued and unpaid interest, the entire inception date note balance of $125.0 million would have been deemed satisfied (“Prepayment Option”).

We are required to deposit 50% of the net proceeds of the next of $18.8 million of capital we raise (for a total of $9.4 million) into escrow for Holbrook Project expenses. We are also required to pay 20% of all future capital raises to Karlsson and Apollo (10% to each) as payments on their respective promissory notes.  These obligations will reduce the cash available from future capital raises that can be used to fund our on-going operations.

At inception, this Prepayment Option was deemed a derivative asset meeting the definition of a financial instrument and subject to Level 3 measurement.  Accordingly, the Company was required to remeasure the fair value of this financial instrument each reporting period.  The estimated fair value of the Prepayment Option as of August 1, 2012, the inception date, was estimated at $1.9 million. In that we did not exercise our option to pay the $100.0 million on or before December 15, 2012, the fair value of the Prepayment Option was subsequently reduced to $0. This change in the fair value of the Prepayment Option of $1.9 million is included in derivative losses.

We are also required to meet the following development milestones:

Apollo Notes

(i)

Complete total depth on at least eight wells on or before November 1, 2013, (Completed)

On March 7, 2013, we entered into a Termination and Release Agreement with certain affiliates of certain investment funds managed by Apollo Global Management, LLC (which we refer to collectively as the Apollo Parties) that terminated the agreements we entered into with the Apollo Parties in November, 2012 (as amended in December, 2012). These agreements related to a potential financing transaction (the “Apollo Financing”) with the Apollo Parties that we terminated as a result of concerns over our ability to obtain the necessary shareholder approvals needed for the Apollo Financing. The fees related to this transaction are included in G&A.

(ii)

Deliver a completed and updated final NI 43-101 resource report on or before February 1, 2014,

(iii)

Deliver completed metallurgical and rock mechanic test work results that will be used to complete the mine and processing plant designs for the definitive feasibility study on or before June 1, 2014, and

Upon execution of the Termination and Release Agreement (i) we paid the Apollo Parties $0.8 million in cash and issued them two promissory notes (“the Apollo Notes”) totaling approximately $6.8 million as a break up and release payment and (ii) we reimbursed the Apollo Parties for $2.2 million of expenses incurred by them in connection with the Apollo Financing.

(iv)

Deliver a completed and published definitive feasibility study on or before December 31, 2014.

Principal and interest on each Apollo Note is payable in full on September 3, 2013 with each note bearing interest at the rate of 11% annum.  The Apollo Notes are also subject to mandatory prepayments in amounts equal to the lessor of the then outstanding balance and 33% of the net cash proceeds received in any debt or equity offering.

If we do not meet any one of the required development milestones, The Karlsson Group will be entitled to foreclose on the collateral securing the Karlsson Note.

On April 15, 2013 and as a condition to the restructuring of our senior debt to The Karlsson Group (see above), the terms of the Apollo Notes were amended to extend the payment due dates and modify certain other terms.  Refer to Note 18—Subsequent Events for additional information.

Karlsson Note Tax Compensation

We currently estimate the compensation for tax matters to be approximately $17.6 million under the Karlsson debt. This estimate could change based on future changes in tax rates (including increases in effective income tax rates caused by “minimum tax” provisions such as the “Buffett rule” or “flat tax” proposals) and/or future changes in certain interest rates published by the Internal Revenue Service.

If no principal payments are made between now and December 31, 2013, we would owe the Karlsson Group an additional $1.2 million in February 2014.  If no principal payments are made during the calendar year 2014, we would owe the Karlsson Group another $1.2 million in February 2015.  These amounts are not currently reflected in the $17.6 million on the balance sheet.

Apollo Notes

On March 7, 2013, we entered into a Termination and Release Agreement with certain affiliates of certain investment funds managed by Apollo Global Management, LLC (which we refer to collectively as the Apollo Parties) that terminated the agreements we entered into with the Apollo Parties in November 2012 (as amended in December 2012). In connection with the Termination and Release Agreement, we issued the Apollo Parties two promissory notes (“the Apollo Notes”) totaling approximately $6.8 million as partial consideration for the break-up and release. The Apollo Notes were amended on April 15, 2013. The Apollo Notes are unsecured and bear interest at the rate of 11% per annum and mature on the earlier of i) July 1, 2015; ii) 12 months following completion of our Definitive Feasibility Study; or iii) the date the Karlsson Note is paid in full.

We are required to prepay the Apollo Notes with 10% of the gross proceeds from any future capital raises until the notes have been paid in full.  As of September 30, 2013 we owed a total of $7.2 million, of which $0.4 million was for accrued interest.

Redeemable_Preferred_Stock

Redeemable Preferred Stock	6 Months Ended
	Sep. 30, 2013
Redeemable Preferred Stock	'
Redeemable Preferred Stock	'
	Note 10 — Redeemable Preferred Stock
	At September 30, 2013, we had a single series of redeemable preferred stock with a liquidation value of $15.0 million outstanding. This preferred stock, which is held by Buffalo Management, LLC, a related party, is non-voting, non-convertible and carries an 8% annual cumulative dividend.
	Dividends on the preferred stock began accumulating on the issue date of August 14, 2013 and will continue to accumulate, whether or not declared. Dividends will be accrued when declared. To date, no dividends have been declared. All unpaid dividends become payable on the date that is six months after a minimum of 50,000 tonnes of potash has first been shipped from our Holbrook Project. Thereafter, the dividends are payable quarterly in arrears on March 15, June 15, September 15 and December 15 of each year.
	We may redeem the preferred stock, in whole or in part, at any time after August 14, 2016. The holders of the redeemable preferred stock may redeem their shares, in whole or in part, at any time following the three year anniversary of the date on which a minimum of 50,000 tonnes of potash has first shipped from our Holbrook Project. In either case, redemption will be made by cash payment in a per share amount equal to the liquidation value per share plus all accrued and unpaid dividends through the date of redemption; provided, that the redemption payment may not exceed 10% of our market capitalization value at the time of redemption. Due to the preferred stock being contingently redeemable until we begin production, we have classified the preferred stock as temporary equity on the balance sheet.
	The put option held by Buffalo is an embedded derivative and has been bifurcated and recorded on the accounting records at fair value.  We estimated the fair value of the put option by using scenario analysis based on various assumptions including: discount rate, preferred stock redemption periods, mine life and potash prices.

Related_Party_Transactions

Related Party Transactions	6 Months Ended						12 Months Ended
	Sep. 30, 2013						Mar. 31, 2013
Related Party Transactions	'						'
Related Party Transactions	'						'
	Note 11—Related Party Transactions						Note 12—Related Party Transactions
	Quincy Prelude LLC and Buffalo Management LLC						Buffalo Management LLC
	Quincy Prelude LLC owns 100% of the voting interests and 82.5% of the economic interests of Buffalo Management LLC (“Buffalo Management” or “Buffalo”) and has sole voting and dispositive power of the shares of our common stock owned by Buffalo. Buffalo owns 15,000,000 shares of our non-voting preferred stock with a liquidation preference of $15.0 million and 8% annual cumulative dividend. Chad Brownstein, one of our directors and executive vice chairman, is the sole member of Quincy Prelude LLC and has sole voting and dispositive power of the shares of our common stock beneficially owned by Quincy Prelude LLC. Barry Munitz, our chairman, owns a 17.5% non-voting economic interest in Buffalo Management. Together Quincy Prelude and Buffalo Management beneficially own more than 5% of our common stock.						Quincy Prelude LLC, one of our stockholders beneficially owning more than 5% of our common stock, owns 100% of the voting interests and 75% of the economic interests of Buffalo Management LLC (“Buffalo Management”) and has sole voting and dispositive power of the shares of our common stock owned by Buffalo Management. Chad Brownstein, one of our directors and executive vice chairman, is the sole member of Quincy Prelude LLC and has sole voting and dispositive power of the shares of our common stock beneficially owned by Quincy Prelude LLC. Barry Munitz, our chairman, owns a 15% non-voting economic interest in Buffalo Management.
	During the six months ended September 30, 2013 and 2012 and for the period from inception through September 30, 2013, Prospect paid Buffalo approximately nil, $1.1 million and $1.4 million, respectively.  No amounts were outstanding to Buffalo as of September 30, 2013 or 2012.						On August 1, 2012 we entered into a termination of the management services agreement with Buffalo Management.  The management services agreement, which was terminable only by Buffalo Management, provided for fees to Buffalo Management for management services rendered in connection with significant transactions such as acquisitions, dispositions and financings.  Also on August 1, 2012, Chad Brownstein, the principal at Buffalo Management who rendered services to us pursuant to the management services agreement and our non-executive board chairman at the time, became our executive vice chairman.
	Under the Karlsson Extension Agreements, we were required to increase Karlsson’s royalty interest from 1% to 2% without increasing the aggregate amount of royalty interests payable to third parties. In order to achieve this result, we negotiated with Buffalo to reduce our revenue interest to Buffalo from 2% to 1%. On August 14, 2013, we compensated Buffalo for this 1% revenue interest by issuing Buffalo 15.0 million shares of our newly created redeemable preferred stock and warrants to purchase 1,005,283 shares of our common stock at $7.20 per share, expiring on August 13, 2018.  These warrants have full-ratchet anti-dilution protection to $3.50 per share. Due to the full ratchet protection, Buffalo was issued an additional 781,887 warrants in connection with our September 2013 capital raise which was completed at $4.05 per share. The September capital raise also resulted in the re-pricing of the 1,005,283 warrants from $7.20 to $4.05.  Due to the additional warrants being issued as a result of the full ratchet anti-dilution protection, additional expense was incurred for the new warrants.  When this agreement was finalized on August 14, 2013, we recorded a gain of $0.5 million for the change in fair value of the warrants as originally estimated at quarter-ended June 30, 2013.						Pursuant to the termination agreement we: (i) paid Buffalo Management $975,000 in cash and issued them a warrant to purchase 7,043 shares of our common stock for $130.00 per share in satisfaction of the $1.5 million fee payable to Buffalo Management in connection with the acquisition of the 50% of American West Potash that we did not previously own and described above in Note 3—The Karlsson Group Acquisition; (ii) issued Buffalo Management a warrant to purchase 5,366 shares of our common stock for $130.00 per share in connection with services rendered by Buffalo Management in connection with our July, 2012 public offering of 308,000 shares of common stock at $130.00 per share; and (iii) issued Buffalo a warrant to purchase 40,000 shares of our common stock for $130.00 per share in consideration of Buffalo Management’s terminating its right to future transaction fees and the $20,000 monthly consulting fee under the management services agreement.  The fee payable to Buffalo Management equal to 2% of Prospect Global’s annual gross revenues in perpetuity and provided for under Section 2(a) of the management services agreement survived the termination.  On April 15, 2013 and as a condition to the Extension Agreement entered into with The Karlsson Group on this same date, this 2% fee was reduced to 1% in exchange for consideration yet to be determined.  Refer to Note 18—Subsequent Events for additional information.
	For warrants with full ratchet anti-dilution protection, any issuances of common stock (or securities exercisable into common stock) at a price below the exercise price of the warrants results in a reduction in the exercise price of the warrants to the new issuance or strike price and a corresponding increase in the number of warrants issued. For example, if an investor held 300 warrants with an exercise price of $4.00 and we issued new shares of common stock at $3.00 per share, the strike price on the warrants would be reduced to $3.00 and the investor would receive an additional 100 warrants with a $3.00 exercise price.						The warrant to purchase an aggregate of 52,409 shares of our common stock for $130.00 per share that we issued to Buffalo Management on August 1, 2012 is exercisable through July 31, 2017, subject to a two year extension in the event of a change of control of Prospect Global.  The fair value of the warrant issued to Buffalo Management on August 1, 2012 was estimated at $5.2 million using the Black-Scholes pricing model.  Significant inputs included the Company’s stock price, an estimated term of five years, estimated volatility of 177.26%, risk free rate of 0.61% and no dividends.  We also amended our registration rights agreement with Buffalo Management to cover the shares issuable pursuant to the August 1, 2012 warrant.  The amended registration rights agreement provides for demand and piggy-back registration rights, provided that each demand registration is limited to 22,000 shares.
	As of September 30, 2013, Quincy Prelude and Buffalo’s holdings included the following:						During the 12 months ended March 31, 2013 and 2012 and for the period from inception through March 31, 2013, Prospect paid Buffalo Management approximately $1.1 million, $0.3 million and $1.4 million, respectively.  As of March 31, 2013 and 2012, accrued liabilities included nil and twenty-five thousand dollars, respectively, related to amounts owing to Buffalo Management.
	Stock and Warrants	Quantity	Strike Price ($)		Expiration Date		Brownstein Hyatt Farber Schreck, LLP
	Warrants	36,271	187.5		2016
	Warrants	35,410	130		2017		Chad Brownstein, one of our directors and executive vice chairman, is the son of a founding partner of Brownstein Hyatt Farber Schreck, LLP (“Brownstein Hyatt”), which serves as Prospect Global’s principal outside legal counsel. Mr. Brownstein’s father controls 35,563 shares of Prospect Global’s common stock which includes the 15,640 shares issued in May 2013 in lieu of payment for services then owing (see below). During the 12 months ended March 31, 2013 and 2012 and for the period from inception through March 31, 2013, Prospect paid Brownstein Hyatt approximately $3.6 million $0.5 million and $4.3 million, respectively, in legal and lobbying/permitting fees. Approximately $0.8 million and $0.3 million payable to Brownstein Hyatt are included in accrued liabilities and accounts payable as of March 31, 2013 and 2012, respectively. Chad Brownstein does not share in any of these fees.
	Warrants	1,787,171	4.05		2018
	Common Stock	63,763	N/A		N/A		On July 2, 2012, we issued Brownstein Hyatt ten year options to purchase 2,400 shares of our common stock at $130.00 per share as compensation.  In May 2013, we entered into an agreement with Brownstein Hyatt under which Brownstein Hyatt received 15,640 shares of our common stock in lieu of payment for services owing at March 31, 2013 in the amount of $0.2 million.
	Preferred Stock 8% Cumulative	15,000,000	N/A		N/A
	Options*	4,000	130		2022		Hexagon Investments, LLC / Grandhaven Energy, LLC / Very Hungry LLC /Scott Reiman 1991 Trust
	Options*	2,000	212.5		2021
							One of our former board members, Scott Reiman, who served on our board from August 2011 to March 2012, is the founder of Hexagon Investments, LLC (“Hexagon”). Hexagon was not a related party prior to these transactions. The relationship between Hexagon, Grandhaven Energy, Very Hungry and the Scott Reiman 1991 Trust and the details of our transactions with these entities are summarized below:
	*Options held by Chad Brownstein, our Executive Vice Chairman
							·                 On April 25, 2011, we issued a $2.5 million face value secured convertible note in exchange for net proceeds of $2.5 million. The note converted into 17,630 shares of our common stock on November 22, 2011. We also issued Hexagon two warrants to purchase our common stock. The first warrant is exercisable until April 25, 2013 for up to 13,333 of our shares at an exercise price of $150.00 per share. The second warrant is exercisable until April 25, 2014 for up to 50,000 of our shares at an exercise price of $150.00 per share. In connection with issuance of the convertible note we granted piggy-back registration rights to Hexagon for the shares issuable upon conversion of the note and exercise of the warrants.
	Gregory M. Dangler, our interim chief financial officer, performs services from time to time for Buffalo Management, which is permitted by his employment agreement, and is compensated by Buffalo Management for this work.
							·            On September 19, 2011, we issued a $1.5 million convertible secured note in exchange for net proceeds of $1.5 million. This note converted to 7,981 shares of our common stock on November 22, 2011. We also issued Hexagon a warrant to purchase up to 19,608 shares of our common stock at an exercise price of $191.50 per share, which is exercisable until September 18, 2013. In connection with issuance of the convertible note, we granted piggy-back registration rights to Hexagon for the shares issuable upon conversion of the note and exercise of the warrants.
	Brownstein Hyatt Farber Schreck, LLP
							·            On November 22, 2011 we sold 51,765 shares of common stock and a warrant to purchase 51,765 shares of common stock at $212.50 per share for total cash proceeds of $11.0 million to Very Hungry LLC, an affiliate of Hexagon. The warrant is exercisable at any time through August 5, 2013. We granted piggy-back registration rights for the shares purchased and issuable upon exercise of the warrant.
	Chad Brownstein, one of our directors and executive vice chairman, is the son of a founding partner of Brownstein Hyatt Farber Schreck, LLP (“Brownstein Hyatt”), which serves as Prospect Global’s principal outside legal counsel and also provides government relations services to us. Through November 13, 2013, Mr. Brownstein’s father controls 105,998 shares of Prospect Global’s common stock which includes 6,000 issued in July 2011, 15,640 in May 2013, 49,875 in September 2013 and 34,483 issued in October 2013 in lieu of payment for services then owing. Brownstein Hyatt also holds fully vested options to purchase 2,400 shares of our common stock at $130.00 per share, expiring in 2022.
							Also on November 22, 2011 we entered into a royalty agreement with Grandhaven Energy, LLC, an affiliate of Hexagon, whereby we sold Grandhaven an overriding royalty interest of 1% of the gross proceeds received by our subsidiary AWP from the extraction of potash from its existing land holdings for $25,000 cash. If (i) the Arizona State Land Department declines to issue any lease to AWP with respect to any state exploration permit, or (ii) the Arizona State Land Department terminates any state exploration permit, or (iii) the Arizona State Land Department refuses to consent to the assignment of any royalty interests in any Arizona state lease, or requires any reduction of or imposes any condition on such royalty interests as a condition of approving an assignment of such royalty interests or approving any royalty reduction or other action with respect to a state lease, or (iv) if AWP has not been issued all of the state leases and conveyed to Grandhaven all royalty interests in all of AWP’s Arizona state leased premises on or before March 1, 2013, Grandhaven has the option to receive substitute royalty interests from us in the same number of acres in portions of our non-Arizona state properties, in a percentage sufficient to compensate Grandhaven for the reduced royalty interests in the affected state lease. If AWP has not been issued any Arizona state leases as of the date that AWP conveys assignments of the royalty interest in the non-Arizona state properties Grandhaven may elect to receive in substitution an assignment of a 1.388% royalty interest in all of the non-Arizona state leased premises. If we do not deliver assignments of the royalty interest from AWP to Grandhaven by December 31, 2013, Grandhaven has the option, at any time thereafter, to purchase shares of our common stock at $212.50 per share in exchange for the surrender by Grandhaven of royalty interests for which assignments have not been obtained, valued at their fair market value at that time (collectively the “Grandhaven Option”).
	During the six months ended September 30, 2013 and 2012 and for the period from inception through September 30, 2013, Prospect made cash payments to Brownstein Hyatt totaling approximately $1.4 million, $1.7 million and $5.7 million respectively for legal and lobbying/permitting fees. Approximately $0.5 million and $0.8 million payable to Brownstein Hyatt are included in accrued liabilities and accounts payable as of September 30, 2013 and 2012, respectively. Chad Brownstein does not share in any of these fees.
							·            Grandhaven Energy controls Very Hungry LLC.  Conway Schatz, a manager of Very Hungry, joined our board of directors effective April 1, 2012 and currently holds 2,800 options to purchase shares of our common stock at an exercise price of $130.00 per share.  Mr. Schatz does not have dispositive power over the shares owned by Very Hungry.
	Hexagon Investments, LLC and affiliates
							·            On June 7, 2012, Hexagon consummated the contribution of all of its shares of common stock and warrants to purchase common stock to Very Hungry. Subsequent to that transaction, the Scott Reiman 1991 Trust liquidated its membership Interest in Very Hungry and received a pro rata distribution of its interests in Very Hungry, including equity securities of Prospect.
	One of our former board members, Scott Reiman, who served on our board from August 2011 to March 2012, is the founder of Hexagon Investments, LLC (“Hexagon”). Conway Schatz, an employee of Hexagon, became a director in April 2012 and resigned from our board on September 29, 2013. Grandhaven Energy, Very Hungry LLC and the Scott Reiman 1991 Trust are all affiliates of Hexagon.  At September 30, 2013, Hexagon and its affiliates’ holdings consisted of the following:
							·            On July 5, 2012, Very Hungry purchased 96,154 shares of our common stock at $130.00 per share in a public offering for total cash proceeds of $12.5 million.
	Entity	Quantity	Exercise Price			Expiration Date
	Common Stock Held						·            On May 2, 2013, we borrowed $5.0 million from Very Hungry, LLC and the Scott Reiman 1991 Trust in exchange for $5.5 million in unsecured, subordinated promissory notes.  In consideration for this loan, we reduced the exercise price on all warrants to purchase our common stock held by the lenders to $15.00 per share (from exercises prices ranging from $212.50 per share to $150.00 per share) and extended the maturity of all these warrants to August 1, 2017. Very Hungry, LLC and the Scott Reiman 1991 Trust have agreed to invest their $5.5 million subordinated notes in convertible preferred stock that would be automatically convertible upon stockholder approval of the conversion into the same securities issued in the public offering that closed on June 26, 2013. Refer to Note 18—Subsequent Events for additional information.
	Very Hungry LLC	891,112	N/A			N/A
	Scott Reiman Trust	199,086	N/A			N/A	Intercompany Receivables from AWP
	Total Common Stock	1,090,198
	Warrants						The Company paid certain expenses in 2013 and 2012 on behalf of AWP. All intercompany receivables and payables have been eliminated from our consolidated financial statements as of March 31, 2013 and 2012.
	Very Hungry LLC (1)	739,337	$	6		2014
	Very Hungry LLC	96,833	$	15		2017
	Very Hungry LLC (2)	1,095,314	$	4.05		2018
	Scott Reiman Trust (1)	177,331	$	6		2014
	Scott Reiman Trust	37,874	$	15		2017
	Scott Reiman Trust (2)	262,713	$	4.05		2018
	Total Warrants	2,409,402
	Options
	Conway Schatz	2,800	$	130		2014
	(1)   Series B Warrants entitling the holder to purchase for $6.00 per unit one share of our common stock and one Series A Warrant to purchase an additional share of our common stock for $6.00 per share.  If exercised, each Series A Warrant would have full ratchet anti-dilution protection.
	(2)   Warrants have full ratchet anti-dilution protection.
	Grandhaven Energy Royalty Interest
	Grandhaven holds a 1% overriding royalty interest in the gross proceeds received by our subsidiary AWP from the extraction of potash from lands and state exploration permits held by AWP on November 22, 2011. Grandhaven has the option, exercisable at any time, to receive shares of our common stock valued at $212.50 per share in exchange for the fair market value of any royalty interest surrendered (the “Grandhaven Option”).
	In addition, if;
	(i)                         the Arizona State Land Department declines to issue any lease to us with respect to any state exploration permit, or
	(ii)                       the Arizona State Land Department terminates any state exploration permit, or
	(iii)                  the Arizona State Land Department refuses to consent to the assignment of any royalty interests in any Arizona state lease, or requires any reduction of or imposes any condition on such royalty interests as a condition of approving an assignment of such royalty interests or approving any royalty reduction or other action with respect to a state lease,
	then Grandhaven has the option to receive substitute royalty interests from us in the same number of acres in portions of our private mineral leases, in a percentage sufficient to compensate Grandhaven for the reduced royalty interests in the affected state leases.
	If we have not been issued any Arizona state leases as of the date that we convey the assignment of the royalty interest in our private mineral leases, Grandhaven may elect to exchange their royalty in our Arizona state leases for a 1.388% royalty interest in all of our private mineral leases.

Equity_Based_Compensation

Equity Based Compensation	6 Months Ended									12 Months Ended
	Sep. 30, 2013									Mar. 31, 2013
Equity Based Compensation	'									'
Equity Based Compensation	'									'
	Note 12—Equity Based Compensation									Note 13—Equity Based Compensation
	Stock Options									Stock Options
	As of September 30, 2013, we had the following options outstanding:									Effective August 22, 2011, the Board and the shareholders approved both the 2011 Employee Equity Incentive Plan (“Employee Plan”) and 2011 Director and Consultant Equity Incentive Plan (“Director Plan”). Amendments to increase the allowable shares to be issued under both Plans were approved by shareholders of the Company on August 27, 2012. The amended Employee Plan authorizes the Board, or its designated committee, to issue up to an aggregate of 270,000 shares, of which 177,340 remained available for issuance at March 31, 2013. The amended Director Plan authorizes the Board, or its designated committee, to issue up to an aggregate of 164,000 shares, of which 70,500 remained available for issuance at March 31, 2013. Awards issued under the Plans may include stock options, stock appreciation rights, bonus stock and/or restricted stock. Awards may be settled in cash, stock or a combination thereof, at the discretion of the Board.
	Exercise Price ($)	Outstanding Options		Vested Options		Expiration				Compensation expense for employees is recognized based on the estimated fair value of the awards on their grant date.  The fair value of options issued to non-employees is measured on the earlier of the date the performance is complete or the date the non-employee is committed to perform. In the event the non-employee measurement date occurs after an interim reporting date, the options are measured at their then-current fair value at each interim reporting date.  For both employee and non-employee options, fair value is estimated using the Black-Scholes option pricing model. Compensation expense is recognized on a straight-line basis over each grant’s respective vesting period for employees and service period for non-employees. Key inputs and assumptions used in estimating the fair value include our stock price, the grant price, expected term, volatility and the risk-free rate. Assumptions used in estimating the fair value of awards granted through March 31, 2013 included the following:
	130	87,800		74,467		2022
	130	10,000		10,000		2023				Expected term	5.0 to 9.47 years
	144	6,000		3,000		2022				Volatility*	128.57% to 181.46%	*
	212.5	60,300		60,300		2021				Risk-free rate	0.63% to 2.00%
		164,100		147,767						Dividend yield	—
	We are authorized to issue stock options up to the greater of 1,934,000 or 10% of the Company’s outstanding shares of capital stock pursuant to our approved equity incentive plans.  Subsequent to September 30, 2013, we issued 685,000 options at exercise prices of $2.25 and $2.36.									*   The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.
	Compensation expense for employees is recognized based on the estimated fair value of the awards on their grant date.  The fair value of options issued to non-employees is measured on the earlier of the date the performance is complete or the date the non-employee is committed to perform. In the event the non-employee measurement date occurs after an interim reporting date, the options are measured at their then-current fair value at each interim reporting date.									A summary of stock option activity under the Plans as of March 31, 2013 and changes during the year then ended is presented below.
	Fair value for employee and non-employee options is estimated using the Black-Scholes option pricing model. Compensation expense is recognized on a straight-line basis over each grant’s respective vesting period for employees and service period for non-employees. Key inputs and assumptions used in estimating the fair value include our stock price, the grant price, expected term, volatility and the risk-free rate. Other assumptions used in estimating the fair value of awards granted through September 30, 2013 included the following:									Stock Options	Shares (000)		Weighted-		Aggregate		Weighted-
													Average		Intrinsic		Average
	Remaining Term	8.17 to 9.51 years											Exercise		Value ($000)		Remaining
	Volatility*	113.4% to 181.5%	*										Price				Term (Years)
	Risk-Free Rate	0.04% to 2.43%								Outstanding at March 31, 2012	68		$	212.5	$	19,636	7.69
	Dividend Yield	—								Granted	127		130.66		—		9.01
										Exercised	—		—		—		—
	*        The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.									Forfeited or expired	(9	)	130		—		—
										Outstanding at March 31, 2013	186		160.71		—		9.02
	A summary of stock option activity under the Plans as of September 30, 2013 and changes during the six months then ended is presented below.									Vested at March 31, 2013	132		171.67		—		8.87
	Stock Options	Shares		Weighted-			Aggregate		Weighted-
				Average			Intrinsic		Average	The weighted average grant date fair value of the stock options granted for the 12 months ended March 31, 2013 and 2012 and for the period August 5, 2010 (Inception) through March 31, 2013 was $95.24, $156.77 and $108.43, respectively.  A total of 43,060 stock options have been forfeited since August 5, 2010 (Inception), while none have expired.
				Exercise			Value ($000)		Remaining
				Price					Term (Years)	A summary of the status of the non-vested stock options as of March 31, 2013, and changes during the year ended March 31, 2013 is presented below.
	Outstanding at March 31, 2013	186,160		$	160.71		$	—	9,02
	Granted	2,000		15			—		2.1	Non-vested Stock Options	Shares (000)		Weighted Average
	Exercised	—		—			—		—				Grant Date
	Forfeited or expired	24,060		147.87			—		—				Fair Value
	Outstanding at September 30, 2013	164,100		$	160.83		$	—	8.55	Non-vested at March 31, 2012	20		$	123.48
	Vested at September 30, 2013	147,767		$	163.95		$	—	8.48	Granted	127		95.24
										Vested	(84	)	96.24
	The weighted average grant date fair value of the stock options granted for the six months ended September 30, 2013 and 2012 was $15.00 and $122.50, respectively.									Forfeited	(9	)	123.1
										Non-vested at March 31, 2013	54		99.63
	A summary of the status of the non-vested stock options as of September 30, 2013, and changes during the six months ended September 30, 2013 is presented below.
	Non-vested Stock Options	Shares		Weighted						As of March 31, 2013, there was $2.2 million of total unrecognized compensation expense related to non-vested share based compensation arrangements granted under the Plans. That cost is expected to be recognized over a weighted average period of approximately one year. The total expense for the fair value of vested grants during the 12 months ended March 31, 2013 and 2012 was $10.3 million and $9.7 million, respectively.  For the period August 5, 2010 (Inception) to March 31, 2013 the cumulative expense was $16.9 million.
				Average
				Grant Date						Warrants Issued for Services
				Fair Value
	Non-vested at March 31, 2013	53,883		$	99.63					The Company has issued 97,936 warrants to purchase shares of common stock to non-employees in exchange for services, with exercise prices ranging from $62.50 to $251.00.  For these awards, fair value is estimated using the Black-Scholes pricing model.  Expense is recognized on a straight-line basis over each grant’s respective service period. Key inputs and assumptions used in estimating the fair value include our stock price, the grant price, expected term, volatility and the risk-free rate. Assumptions used in estimating the fair value of awards granted through March 31, 2013 included the following:
	Granted	2,000		2.1
	Vested	(25,550	)	85.8						Expected term	2.0 to 5.0 years
	Forfeited	(14,000	)	130.59						Volatility*	106.22% to 177.26%	*
	Non-vested at September 30, 2013	16,333		$	82.78					Risk-free rate	0.22% to 1.52%
										Dividend yield	—
	As of September 30, 2013, there was $0.4 million of total unrecognized compensation expense related to non-vested share based compensation arrangements granted under the Plans. That cost is expected to be recognized over a weighted average period of less than one year. The total expense for the fair value of vested grants during the six months ended September 30, 2013 and 2012 was $0.2 million and $2.6 million, respectively.
										*           The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.
										The expense recognized within G&A related to these awards amounted to $5.9 million and nil for the 12 months ended March 31, 2013 and 2012 and $5.9 million for the cumulative period ended March 31, 2013.
										The Company is currently committed to issuing an additional 800 warrants for services in the next twelve months under an existing consulting contract. Refer to Note 16—Commitments and Contingencies for additional information.

Warrants

Warrants	6 Months Ended
	Sep. 30, 2013
Warrants	'
Warrants	'
	Note 13—Warrants
	As of September 30, 2013, we had the following warrants outstanding:
	·            3,936,677 Series A Warrants having an exercise price of $4.05 per share and expiration dates in 2018. All Series A Warrants contain full ratchet anti-dilution protection provisions.
	·            2,254,663 other warrants comprised of the following:
	Outstanding Warrants	Exercise Price ($)	Expiration	Notes
	600	3.15 –4.04	2018
	1,787,171	4.05	2018	Contain full ratchet anti-dilution protection to $3.50 per share
	307,424	6.00 – 17.00	2017, 2018
	159,468	62.50 – 251.00	2014 - 2018
	2,254,663
	·            1,031,466 Series B Warrants were outstanding which consisted of 114,798 expiring on November 1, 2013 and 916,668 expiring in January 2014. These Series B Warrants have an exercise price of $6.00 per share and is exercisable for one share of our common stock and one Series A Warrant. Each Series A Warrant issued in the exercise of a Series B Warrant will have a five year term, an initial exercise price of $6.00 and full ratchet anti-dilution protection.
	·            The expense recognized related to warrants was $5.1 million and $5.6 million for the six months ended September 30, 2013 and September 30, 2012, respectively.
	·            Subsequent to September 30, 2013 we issued the 200 warrants on October 1, 2013 and 200 warrants on November 1, 2013 at strike prices of $3.06 and $2.34, respectively
	For warrants with full ratchet anti-dilution protection, any issuances of common stock (or securities exercisable into common stock) at a price below the exercise price of the warrants results in a reduction in the exercise price of the warrants to the new issuance or strike price and a corresponding increase in the number of warrants issued. For example, if an investor held 300 warrants with an exercise price of $4.00 and we issued new shares of common stock at $3.00 per share, the strike price on the warrants would be reduced to $3.00 and the investor would receive an additional 100 warrants with a $3.00 exercise price.
	Service Warrants
	The Company has issued approximately 0.1 million warrants to purchase shares of common stock in exchange for services, with exercise prices ranging from $3.15 to $251.00. The weighted average exercise price for these warrants is $150.29.  For these awards, fair value is estimated using the binomial-lattice-based valuation model.  Expense is recognized on a straight-line basis over each grant’s respective service period. Key inputs and assumptions used in estimating the fair value include our stock price, the grant price, expected term, volatility and the risk-free rate. Assumptions used in estimating the fair value of service warrants granted through September 30, 2013 included the following:
	Expected Term	0.25 to 4.8 years
	Volatility*	121.5% to 176.7%
	Risk-Free Rate	0.02% to 1.30%
	Dividend Yield	—
	*The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.
	The Company is currently committed to issuing an additional 400 warrants for services in the next twelve months under existing consulting contracts.
	Investor Warrants
	As part of its fundraising efforts, the Company has issued warrants from time to time to various investors to purchase shares of its common stock. As of September 30, 2013, a total of 7.1 million investor warrants had been issued and remained outstanding. The exercise price and remaining exercise period of these warrants ranged from $4.05 to $150.00. The weighted average exercise price of the investor warrants is $5.95. With the completion of our capital raise on June 26, 2013 and the issuance of the warrants therewith we no longer met the criteria for equity accounting for our warrants and therefore began accounting for all warrants as liabilities.  This accounting change was triggered by the full ratchet anti-dilution provisions contained in these warrants.
	Assumptions used in estimating the fair value of investor warrants granted through September 30, 2013 included the following:
	Expected Term	0.09 to 5.7 years
	Volatility*	123.6% to 174.9%
	Risk-Free Rate	0.02% to 1.60%
	Dividend Yield	—
	*The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.

Stockholders_Equity

Stockholders' Equity	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Shareholders' Equity	'	'
Stockholders' Equity	'	'
	Note 14—Stockholders’ Equity	Note 14—Shareholders’ Equity
	On August 30, 2013, the shareholders of the Company approved a reverse stock split of the Company’s common stock (the “reverse stock split”) at a ratio of 1-for-50. The reverse stock split became effective September 4, 2013. The Company had 114,969,415 shares of common stock issued and outstanding immediately before the reverse stock split and 2,299,388 immediately following the reverse stock split. All share and per share amounts in these financial statements have been retroactively adjusted to reflect the reverse stock split.	On August 30, 2013, the shareholders of the Company approved a reverse stock split of the Company’s common stock (the “reverse stock split”) at a ratio of 1-for-50. The reverse stock split became effective September 4, 2013. All share and per share amounts in these financial statements have been retroactively adjusted to reflect the reverse stock split.
	Common Stock	Common Stock
	The Company is authorized to issue 300,000,000 shares of common stock, with a par value of $0.001 per share, under the terms of the Company’s Amended and Restated Articles of Incorporation. As of September 30, 2013, there were 4,174,039 shares of our common stock issued and outstanding. Subsequent to September 30, 2013, we issued 34,483 shares of common stock to Brownstein in lieu of payments for legal services rendered during the period and 1,500 shares to a third party service provider.	The Company is authorized to issue 300,000,000 shares of common stock, with a par value of $0.001 per share, under the terms of the Company’s Amended and Restated Articles of Incorporation. As of March 31, 2013, there were 1,451,914 shares of our common stock issued and outstanding. In addition, we have commitments to issue another 13,500 shares under an existing service contract. Refer to Note 16—Commitments and Contingencies for additional information.
	Preferred Stock	Preferred Stock
	The Company is authorized to issue 100,000,000 shares of preferred stock, with a par value of $0.001 per share, under the terms of the Company’s Amended and Restated Articles of Incorporation. As of September 30, 2013, we had 15,000,000 shares of redeemable preferred stock issued and outstanding having a liquidation value of $15 million.  This preferred stock is redeemable, non-convertible and non-voting and carries an 8% annual cumulative dividend.  Redemptions of this preferred stock are limited to 10% of our market capitalization at the time of redemption.	The Company is authorized to issue 100,000,000 shares of preferred stock, with a par value of $0.001 per share, under the terms of the Company’s Amended and Restated Articles of Incorporation. As of March 31, 2013, no shares of our preferred stock had been issued.
	Also during the quarter ended September 30, 2013, we issued and redeemed another 5,500,000 shares of our preferred stock having a liquidation value of $5.5 million. This preferred stock was issued to the Very Hungry LLC and the Scott Reiman 1991 Trust, affiliates of ours, in exchange for the redemption of the $5.5 million in convertible notes issued to the these parties in May 2013.  This non-redeemable, mandatorily convertible preferred stock was converted into an aggregate of 916,668 shares of common stock, 916,668 Series A Warrants and 916,668 Series B Warrants, identical to those issued in our June 2013 public offering, on August 30, 2013.  The conversion of this preferred stock represented a debt extinguishment and was accounted for as such.  This extinguishment resulted in the recognition of a $2.1 million loss from the write off of the remaining debt discount that was recorded on issuance of the convertible notes.  This transaction also resulted in a beneficial conversion of $0.7 million, all of which was recorded and amortized through additional paid-in capital during the period.	Investor Warrants
	Both series of preferred stock contain a fundamental change provision allowing the holder to receive the liquidation preference of the preferred stock and accrued dividends on the occurrence of a liquidity event such as a change in control, consolidation or merger.  We deem the value of these options to be minimal.	As part of its fundraising efforts, the Company has issued warrants from time to time to various investors to purchase shares of its common stock. As of March 31, 2013, a total of 313,058 investor warrants had been issued and remained outstanding. The exercise price and remaining exercise period of these warrants range from $150.00 to $212.50 and from 0.1 to 6.2 years, respectively.
		The exercise prices and expiration dates for 134,706 of these warrants were subsequently modified in connection with the $5.0 million Bridge Loan Financing completed on May 2, 2013.  Refer to Note 18—Subsequent Events for additional information.
		Non-Controlling Interest
		The Company included The Karlsson Group’s initial $11.0 million contribution of mineral interests to AWP in non-controlling interest on the balance sheet, net of its share of losses. Through this contribution, The Karlsson Group earned its 50% interest in AWP. The Company earned its initial 50% interest in AWP through its cash contributions of $11.0 million.
		Prior to the closing of The Karlsson Group Acquisition on August 1, 2012, Prospect was the 50% owner of AWP, operated and controlled AWP, and accordingly historically provided consolidated financial statements for Prospect and AWP. As such, the remaining 50% interest in AWP owned by The Karlsson Group was considered a non-controlling interest through the August 1, 2012 acquisition date.
		With the completion of The Karlsson Group Acquisition on August 1, 2012 and in accordance with GAAP that calls for any change in a parent’s ownership of a non-controlling interest to be accounted for as an equity transaction, The Karlsson Group Acquisition was treated as a distribution through equity and accordingly no step-up in basis of the assets acquired occurred.

Derivative_Financial_Instrumen

Derivative Financial Instruments	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Derivative Financial Instruments	'	'
Derivative Financial Instruments	'	'
	Note 15—Derivative Financial Instruments	Note 10—Derivative Financial Instruments
	As of September 30, 2013, we had recorded a derivative liability of $17.1 million representing the estimated fair value of our outstanding stock warrants which was triggered by our June 26, 2013 capital raise that included full ratchet anti-dilution protection for the new warrants issued during the offering.  We valued these warrants by using the binomial lattice valuation model. With the anti-dilution protection afforded these new warrants, we no longer met the criteria for equity accounting for our warrants and therefore began accounting for all warrants as liabilities. In that our warrants were classified as equity at March 31, 2013, we had no similar liability at that date.  See Note 13 —Warrants.	Derivative Assets
	As of September 30, 2013, we also had an embedded derivative liability of $0.7 million relating to the embedded put option on the redeemable preferred stock held by Buffalo Management. This amount is included in other long-term liabilities on the balance sheet. The holder of this preferred stock may redeem their shares, in whole or in part, at any time following the three year anniversary of the date on which a minimum of 50,000 tonnes of potash has first shipped from our Holbrook Project.  We estimated the value of the derivative liability by using scenario analysis based on various assumptions including: discount rate, preferred stock redemption periods, mine life and potash prices.	As of March 31, 2013 and 2012, we had no derivative assets. However, as discussed in Note 8—Debt, we recorded a $1.9 million derivative asset at the inception of the Karlsson Note on August 1, 2012 related to the Prepayment Option but when we did not exercise that option on or before December 15, 2012, the fair value of the Prepayment Option was subsequently reduced to $0 and a corresponding charge was recorded to derivative losses.
		Derivative Liabilities
		As of March 31, 2013 and 2012, the fair values of the compound embedded derivatives and the warrant derivative liabilities were nil. As discussed in Note 9—Convertible Notes, the secured convertible notes were converted into common stock on November 22, 2011. As a result of the conversions, the compound embedded derivatives were eliminated as they existed because of and derived their values from the convertible notes. Additionally, the warrant derivative liabilities were eliminated. From the inception of the financings through November 22, 2011, the warrants were required to be classified as derivative liabilities due to the down-round protection features, automatic conversion provisions, and the make-whole provisions contained in the secured convertible notes. With the conversion of the secured convertible notes on November 22, 2011, the warrants were no longer required to be carried as derivative liabilities as the provisions and features giving rise to the warrant liabilities were also eliminated. As such, the warrants were reclassified to stockholders’ equity on November 22, 2011.
		The following table summarizes the effects on our loss associated with changes in the fair values of our derivative financial instruments for the year ended March 31, 2012. For information on our $1.9 million derivative loss for the year ended March 31, 2013, please see the preceding section on Derivative Assets above.  No gain (loss) was recognized for the period August 5, 2010 (Inception) through March 31, 2011.
		Our financings giving rise to derivative financial instruments and the income effects:	Year Ended
			March 31, 2012
			(thousands)
		Compound embedded derivatives	$	(23,525	)
		Day-one derivative loss	(7,336		)
		Warrant derivative liabilities	(8,949		)
		Total derivative loss	$	(39,810	)
		Fair Value Considerations
		GAAP establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. As presented in the tables below, this hierarchy consists of three broad levels:
		Level 1 valuations:	Quoted prices in active markets for identical assets and liabilities.
		Level 2 valuations:
			Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and model-derived valuations whose inputs or significant value drivers are observable.
		Level 3 valuations:	Significant inputs to valuation model are unobservable.
		We classify assets and liabilities measured at fair value in their entirety based on the lowest level of input that is significant to their fair value measurement. We measure all our derivative financial instruments that are required to be measured at fair value on a recurring basis using Level 3 inputs. Level 3 inputs are unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. However, as of March 31, 2013 and 2012 none of our outstanding instruments required fair value measurement.
		The features embedded in the secured convertible notes were combined into one compound embedded derivative that we valued using the income valuation technique using the Monte Carlo valuation model. The Monte Carlo model was believed by our management to be the best available technique for this compound derivative because, in addition to providing for inputs such as trading market values, volatilities and risk free rates, the Monte Carlo model also embodies assumptions that provide for credit risk, interest risk and redemption behaviors (i.e. assumptions market participants exchanging debt-type instruments would also consider). The Monte Carlo model simulates multiple outcomes over the period to maturity using multiple assumption inputs also over the period to maturity. As of March 31, 2013 and 2012, all of our compound embedded derivatives valued using the Monte Carlo model had been eliminated and thus no fair value measurements were required.
		The warrants were valued using a binomial-lattice-based valuation model. The lattice-based valuation technique was utilized because it embodies all of the requisite assumptions (including the underlying price, exercise price, term, volatility, and risk-free interest-rate) that are necessary to fair value these instruments. For forward contracts that contingently require net-cash settlement as the principal means of settlement, we project and discount future cash flows applying probability-weights to multiple possible outcomes. Estimating fair values of derivative financial instruments requires the development of significant and subjective estimates that may, and are likely to, change over the duration of the instrument with related changes in internal and external market factors. In addition, option-based techniques are highly volatile and sensitive to changes in the trading market price of our common stock. Because derivative financial instruments are initially and subsequently carried at fair values, our income will reflect the volatility in these estimate and assumption changes. As of March 31, 2013 and 2012, none of our outstanding warrants required fair value measurement.
		The following table sets forth a reconciliation of changes in the fair value of financial liabilities classified as Level 3 in the fair valued hierarchy:
			Derivative Financial Information
			2013			2012
			(thousands)			(thousands)
		Beginning balance as of period ended March 31	$	—		$	(17,288	)
		Total gains or losses (realized or unrealized):
		Included in earnings	—			(20,956		)
		Warrant issuances	—			(12,396		)
		Warrant reclassification to equity	—			20,228
		Debenture issuances	—			(12,001		)
		Debenture conversions	—			42,413
		Ending balance as of March 31	—			—

Loss_per_Share

Loss per Share	6 Months Ended																12 Months Ended
	Sep. 30, 2013																Mar. 31, 2013
Loss per Share	'																'
Loss per Share	'																'
	Note 16—Loss per Share																Note 15—Loss per Share
	The following sets forth the computation of basic and fully diluted weighted average shares outstanding and loss per share of common stock for the periods indicated (unaudited, in thousands except for per share amounts):																The following sets forth the computation of basic and fully diluted weighted average shares outstanding and loss per share of common stock for the periods indicated:
		Three Months			Three Months			Six Months			Six Months			Cumulative from				Year Ended			Year Ended			Cumulative from
		Ended September			Ended September			Ended September			Ended September			August 5, 2010				March 31,			March 31,			August 5, 2010
		30, 2013			30, 2012			30, 2013			30, 2012			(Inception)				2013			2012			(Inception)
														through										through March
														September										31, 2013
														30, 2013				(thousands, except per share amounts)
		(unaudited)			(unaudited)			(unaudited)			(unaudited)			(unaudited)			Net loss attributable to Prospect Global Resources Inc.	$	(79,854	)	$	(63,566	)	$	(160,254	)
	Numerator																Weighted average number of common shares outstanding — basic	1,155			560			716
	Net loss attributable to Prospect Global Resources Inc.	$	(18,361	)	$	(22,107	)	$	(17,344	)	$	(28,678	)	$	(177,598	)	Dilution effect of restricted stock and warrants	—			—			—
	Undeclared Preferred Stock Dividends	(160		)	—			(160		)	—			(160		)	Weighted average number of common shares outstanding — fully diluted	1,155			560			716
	Net loss applicable to common shares for basic and diluted earnings per share	$	(18,521	)	$	(22,107	)	$	(17,504	)	$	(28,678	)	$	(177,758	)	Loss per share of common stock:
	Denominator																Basic and fully diluted loss per share of common stock	$	(69.14	)	$	(113.51	)	$	(223.82	)
	Weighted average number of common shares outstanding — basic	2,737			1,094			2,124			943			1,169
	Dilution effect of restricted stock and warrants	—			—									—			The Company has issued warrants to purchase shares of our common stock. These warrants, along with outstanding options (described in Note 13—Equity Based Compensation and Note 14—Shareholders’ Equity), were not included in the computation of loss per share above as to do so would have been antidilutive for the periods presented. The potentially dilutive warrants, grants and options totaled 0.6 million shares as of March 31, 2013.
	Weighted average number of common shares outstanding — fully diluted	2,737			1,094			2,124			943			1,169
	Basic and fully diluted loss per share of common stock	$	(6.77	)	$	(20.21	)	$	(8.24	)	$	(30.41	)	$	(152.06	)
	Our outstanding warrants and options (described in Note 12 — Equity Based Compensation, Note 13 — Warrants and Note 14 — Stockholders’ Equity), were not included in the computation of Loss per Share above as to do so would have been antidilutive for the periods presented. These potentially dilutive warrants and options totaled 7,346,907 shares as of September 30, 2013.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended								12 Months Ended
	Sep. 30, 2013								Mar. 31, 2013
Commitments and Contingencies	'								'
Commitments and Contingencies	'								'
	Note 17—Commitments and Contingencies								Note 16—Commitments and Contingencies
	The Karlsson Group Acquisition								Litigation
	In conjunction with the Karlsson Group Acquisition, we have the following commitments and contingencies:								We have received correspondence from a shareholder who purchased $10 million of shares in our November 2012 public offering asserting a right to rescind the purchase based on violation of securities laws in connection with that offering.  We believe the claim is without merit and are vigorously defending against it.  No litigation has been commenced in this matter. In a letter dated June 14, 2013, the four underwriters in our November 2012 public offering notified us that they received a letter from this stockholder in which the stockholder elected to void its purchase of shares in our November 2012 public offering. Pursuant to the terms of the underwriting agreement we entered into with the underwriters in our November 2012 public offering, the underwriters requested that we appoint counsel for the underwriters to advise on this matter, subject to their determination that counsel is satisfactory, or, alternatively, we may authorize the underwriters to employ counsel at our expense.
	a)      we are required to pay the Karlsson Group 2% of gross potash sales from any of our current or future acquired leases, licenses and permits,								In the normal course of operations, Prospect and its subsidiaries may be subject to litigation. As of March 31, 2013, there were no material litigation matters. The Company holds various insurance policies in an attempt to protect it and investors.
	b)      in the event of a sale, directly or indirectly, of at least 50% of AWP or a merger of AWP with or into an unaffiliated entity on or prior to February 1, 2018, the Karlsson Group is entitled to15% of the net proceeds received from the transaction, capped at $75.0 million.								The Karlsson Group Acquisition
	c)       in the event of any equity or debt offering completed by the Company while the Karlsson Note remain outstanding, we must place 50% of the net proceeds of the next $18.8 million of capital raised into escrow (for a total of $9.4 million), which funds may be used for Holbrook Project expenses.								The execution of The Karlsson Group Acquisition agreements (and subsequent amendments thereto in April and June 2013, refer to Note 18—Subsequent Events) subjected the Company to various commitments and contingencies, including:
	d)      in the event of any equity or debt offering completed by the Company while the Karlsson Note remain outstanding, we must pay the Karlsson Group 10% of the gross proceeds raised as a prepayment of the outstanding balance.								a)       We granted The Karlsson Group the future right to receive payments equal to 2% of the gross sales received by us from potash production from any property over which we currently have leases, licenses and permits or which AWP may hereafter acquire.
	e)       We have agreed to compensate the Karlsson Group for any incremental income tax liabilities attributable to an increase in federal or state income tax rates over the tax rates that were in effect for 2012, such that they are made whole with respect to any such increase in tax liabilities. We also agreed to compensate the Karlsson Group for certain interest charges imposed on the deferred tax liabilities as a result of the application the “installment sale” rules of the Internal Revenue Code.								b)       In the event of a sale of at least 50% of AWP or a merger of AWP with or into an unaffiliated entity on or prior to February 1, 2018, we agreed to pay The Karlsson Group an additional payment equal to 15% of the net proceeds received from the transaction, capped at $75.0 million (a “Supplemental Payment”).
	Royalties								c)        The Karlsson Group will recognize taxable gain on principal payments that it receives under the Karlsson Note.  We agreed to compensate The Karlsson Group for any incremental income tax liabilities attributable to an increase in federal or state income tax rates over the tax rates that were in effect for 2012, such that the Karlsson Group is made whole with respect to any such increase in tax liabilities.  We also agreed to compensate The Karlsson Group for certain interest charges imposed on the deferred tax liabilities as a result of the application the “installment sale” rules of the Internal Revenue Code.  Based on current tax and interest rates, the combined cost of these “gross-up” payments would be approximately $26.3 million.  However, this is an estimate only, and the amount of the tax gross-up payments is subject to change based on future tax rate changes and/or changes in certain interest rates published by the Internal Revenue Service.
	In addition to the 2% royalty to the Karlsson Group, we have the following royalty or revenue interest commitments once we have production from our Holbrook Project:								d)       We are required to meet the following development milestones: (i) complete total depth on at least eight wells on or before November 1, 2013, (ii) deliver a completed and updated final NI 43-101 resource report on or before February 1, 2014, (iii) deliver completed metallurgical and rock mechanic test work results that will be used to complete the mine and processing plant designs for the definitive feasibility study on or before June 1, 2014 and (iv) deliver a completed and published definitive feasibility study on or before December 31, 2014.  We will need to raise additional capital beyond what has already been raised to complete these development milestones. If we are unable to raise the necessary funds to satisfy these development milestones, The Karlsson Group could declare us to be in default, causing all of our then outstanding debt to be immediately due and payable and allowing The Karlsson Group to foreclose on their collateral.. Refer to Note 18—Subsequent Events for additional information.
	·          1% revenue interest to Buffalo Management;								The Apollo Notes
	·          1% royalty interest to Grandhaven;
	·          Royalties of a sliding scale nature on gross sales from our private mineral estate sections;								In the event of any equity or debt offering completed by the Company while the Apollo Notes remain outstanding, we have agreed to pay Apollo 10% of the gross proceeds raised (following the first $10.0 million of capital raised) as a prepayment of the outstanding principal.
	·          Royalties of a sliding scale nature on gross sales from our Arizona state sections, although no formal agreement has been made at his time.
									Buffalo Management Royalty Amendment
	Major Contractual Obligations
									In connection with restructuring the Karlsson senior debt, we were required to increase Karlsson’s royalty interest from 1% to 2% without increasing the aggregate amount of royalty interests payable to third parties in the aggregate. In order to achieve this result, we negotiated with Buffalo Management, or Buffalo, to reduce our royalty payable to Buffalo from 2% to 1%. We agreed to compensate Buffalo for this royalty reduction by giving Buffalo either, or a combination of, at its election, (i) equity securities (that may include common stock, preferred stock or warrants for common stock as mutually agreed) equal in value to the determined fair market value of the royalty surrendered or (ii) preferred stock that is redeemable after we commence receiving revenues from the Holbrook Project for the determined fair market value plus accrued interest; provided that no securities shall be issued to Buffalo prior to July 1, 2013 and provided further that in no event will any equity securities or securities convertible into equity securities issued to Buffalo (x) exceed 10% of our outstanding capital stock or (y) be redeemable for aggregate consideration exceeding 10% of our equity market capitalization. To value the surrendered royalty we agreed to engage a third party valuation firm reasonably satisfactory to Buffalo.
	(amounts in thousands)	Less than 1-year		1-2 years		Thereafter	Total
									Common Stock and Warrant Commitments
	Debt obligations*	2,328	*	166,805	*	—	169,133	*
	Land and lease payment**	363		609		729	1,701		As of March 31, 2013, the Company had commitments to issue an additional 13,500 shares of our common stock and 1,600 warrants to purchase shares of our common stock in exchange for services under existing consulting contracts.  The 13,500 shares of common stock are due in quarterly increments of 1,500 shares each, with the next increment being due on April 5, 2013.  The 1,600 warrants are due in monthly tranches of 200 immediately exercisable warrants, with each such warrant tranche having a five year duration and a strike price equal to the most recent sales price of our common stock as reported on Nasdaq.  The due date for the next warrant tranche is April 1, 2013. As of the July 1, 2013, these commitments had been reduced to 1,200 shares of our common stock and 800 warrants to purchase shares of our common stock.
	*Amounts include estimates of future interest and tax compensation to be incurred between now and the debt’s maturity.
	**Amounts may change in the future as mineral leases are converted to mining leases.
	The Apollo Notes
	In the event of any equity or debt offering completed by the Company while the Apollo Notes remain outstanding, we have agreed to pay Apollo 10% of the gross proceeds raised as a prepayment of the outstanding principal.
	Common Stock and Warrant Commitments
	As of September 30, 2013, the Company had commitments to issue an additional 10,500 shares of our common stock and 400 warrants to purchase shares of our common stock in exchange for services under existing consulting contracts.  The 10,500 shares of common stock are due in quarterly increments of 1,500 shares each. We issued 1,500 shares subsequent to quarter end on October 5, 2013. The 400 warrants are due in monthly tranches of 200 immediately exercisable warrants, with each such warrant tranche having a five year term and a strike price equal to the most recent sales price of our common stock as reported on Nasdaq.  We issued the remaining 400 warrants subsequent to quarter end on October 1, 2013 and November 1, 2013 at strike prices of $3.06 and $2.34, respectively.
	As part of our June 26, 2013 public offering, the participating investors received 856,798 Series B Warrants with each Series B Warrant entitling the holder thereof to purchase one additional share of our common stock and one additional warrant in exchange for $6.00 per Series B Warrant.  As of September 30, 2013, 114,798 of these Series B Warrants remained outstanding, all of which expired on November 1, 2013.
	In September 2013, we issued the Very Hungry Parties 916,668 Series B Warrants with each Series B Warrant entitling the holder thereof the right to purchase one additional share of our common stock and one additional warrant in exchange for $6.00 per Series B Warrant. As of September 30, 2013, all 916,668 of these Series B Warrants remained outstanding.  These Series B Warrants expire on January 9, 2014.  If exercised, each B Series warrant would result in the immediate issuance of one additional share of our common stock and one immediately exercisable Series A Warrant having an initial exercise price of 6.00 per share and expiration date five years from the date of issuance.
	As of September 30, 2013, we had 3,936,677 Series A Warrants outstanding having full ratchet anti-dilution protection rights and another 1,787,171 warrants containing full ratchet protection rights to $3.50 per share.  In connection with our September 2013 capital raise completed at $4.05 per share, these full ratchet provisions resulted in the issuance of 1,650,348 new warrants having a strike price of $4.05 and expiration date five years from the issuance date.  It also lowered the strike price to $4.05 (from $6.00 and 7.20) on another 1,862,081 warrants. Additional expense was recognized for the additional full ratchet warrants that were issued on September 26, 2013, all of which were marked to market at the end of the quarter.
	For warrants with full ratchet anti-dilution protection, any issuances of common stock (or securities exercisable into common stock) at a price below the exercise price of the warrants results in a reduction in the exercise price of the warrants to the new issuance or strike price and a corresponding increase in the number of warrants issued. For example, if an investor held 300 warrants with an exercise price of $4.00 and we issued new shares of common stock at $3.00 per share, the strike price on the warrants would be reduced to $3.00 and the investor would receive an additional 100 warrants with a $3.00 exercise price.
	Litigation
	On April 26, 2013, we received correspondence from a stockholder who purchased $10.0 million of shares in our November 2012 public offering asserting a right to rescind the purchase based on violation of securities laws in connection with that offering.  In a related letter dated June 14, 2013, the four underwriters in our November 2012 public offering notified us that they received a letter from the same stockholder in which the stockholder sought to void its purchase of shares in our November 2012 public offering. Pursuant to the terms of the underwriting agreement we entered into with the underwriters in our November 2012 public offering, we could be required to appoint counsel for the underwriters to advise on this matter, subject to their determination that counsel is satisfactory, or, alternatively, we could be required to authorize the underwriters to employ counsel at our expense. We believe the claim is without merit and intend to vigorously defend against it.  No litigation has been commenced in this matter.
	In the normal course of operations, Prospect and its subsidiaries may be subject to litigation. As of September 30, 2013, there were no material litigation matters. The Company holds various insurance policies in an attempt to protect it and investors.

Fair_Value_Measurement

Fair Value Measurement	6 Months Ended
	Sep. 30, 2013
Fair Value Measurement	'
Fair Value Measurement	'
	Note 18—Fair Value Measurement
	US GAAP defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The standards establish a fair value hierarchy that distinguishes between (1) market participant assumptions developed based on market data obtained from independent sources (observable inputs) and (2) an entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs). The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are described below:
	·            Level 1—Quoted prices in active markets for identical assets and liabilities.
	·            Level 2—Quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations whose inputs are observable or whose significant value drivers are observable.
	·            Level 3—Significant inputs to the valuation model are unobservable.
	The following tables present information about financial instruments recognized at fair value as of September 30, 2013 and March 31, 2013 and indicate the fair value hierarchy:
		September 30, 2013										March 31, 2013
	(in thousands)	Level 1			Level 2			Level 3		Total		Level 1		Level 2		Level 3		Total
	Liabilities:
	Tax compensation*	—			17,629			—		17,629		—		6,226		—		6,226
	Buffalo embedded derivative	—			—			650		650		—		—		—		—
	Derivative warrant liability*	—			—			17,055		17,055		—		—		—		—
	Total liabilities	$	—		$	17,629		$	17,705	$	35,334	$	—	$	6,226	$	—	6,226
	* Measured on a recurring basis (at least annually).
	The estimated fair values of the Company’s debt (all non-recurring) are as follows:
		Carrying Value			Fair Value
		(In thousands)
	September 30, 2013 (Level 3)	$	127,532		$	94,203
	March 31, 2013 (Level 1)	$	122,032		$	112,110
	The following table sets forth a summary of the qualitative information related to the unobservable inputs used in the calculation of the Company’s Level 3 financial liabilities for the six months ended September 30, 2013:
	Description	Valuation Technique		Unobservable Inputs
	Grandhaven option	Discounted cash flow		Discount rate, future potash prices and mine life
	Derivative warrant liability	Binomial-Lattice valuation model		Underlying price, exercise price, term, volatility and risk free interest rate
	Indebtedness	Discounted cash flow		Discount rate
	Buffalo preferred stock put option	Discounted cash flow		Discount rate, preferred stock redemption scenarios, future potash prices and mine life
	The following table sets forth a summary of changes in the fair value of the Company’s Level 3 financial liabilities for the six months ended September 30, 2013:
		Derivative Warrant			Very Hungry			Buffalo Embedded
		Liability			Embedded			Derivative
					Derivative
	Balance at March 31, 2013	$	—		$	—		$	—
	Mark-to-market adjustment	17,055			—			—
	Extinguishment — debt (net of amortization)	—			—			—
	New instrument — initial valuation	—			2,900			650
	Extinguishment — embedded derivative	—			(2,900		)	—
	Balance at September 30, 2013	$	17,055		$	—		$	650

Subsequent_Events

Subsequent Events	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Subsequent Events	'	'
Subsequent Events	'	'
	Note 19—Subsequent Events	Note 18—Subsequent Events
	Changes to our Board of Directors	Debt Restructuring
	On September 30, 2013 the Company’s board of directors appointed Reed Dickens and Daniel J. Neumann to its board of directors. On September 29, 2013, Conway Schatz resigned from the Company’s board of directors.  On October 1, 2013, Marc Holtzman and Zhi Zhong Qiu also resigned from the Company’s board of directors. Mr. Schatz’s, Mr. Holtzman’s and Mr. Qiu’s resignations were not due to any disagreement with the Company on any matter related to the Company’s operations, policies or practices. Mr. Holtzman and Mr. Qiu joined the Company’s international advisory board alongside Gov. Gray Davis and Devon Archer.	On April 15, 2013 and June 26, 2013 we entered into Extension Agreements with The Karlsson Group which restructured the senior first priority secured promissory note (the “Karlsson Note”) that we issued to The Karlsson Group on August 1, 2012 in connection with our purchase of Karlsson’s 50% interest in AWP (the “Initial KG Transaction”).  In connection with the First Extension Agreement, we amended some of the related documents, including the Karlsson Note (the “Karlsson Note Amendment”), and restructured the two promissory notes issued to affiliates of Apollo Global Management, LLC (“Apollo”) on March 7, 2013 in the aggregate principal amount of $6.8 million (the “Apollo Notes”).
	Nasdaq delisting notice and appeal	The First Karlsson Note Amendment requires us to make future tax “gross-up” payments to The Karlsson Group to compensate them for increases in federal and state income taxes and other tax related matters .We currently estimate the cost of these tax “gross-up” payments to be approximately $26.3 million ($20.1 million if you include the tax gross-up payments owing prior to the Amendment date); however, the tax gross-up payments are subject to change based on future changes in tax rates (including increases in effective income tax rates caused by “minimum tax” provisions such as the “Buffett rule” or “flat tax” proposals) and/or future changes in certain interest rates published by the Internal Revenue Service.
	On April 25, 2013, we received written notification from The Nasdaq Stock Market that we were no longer in compliance with Nasdaq Listing Rule 5550(b)(2) because the market value of our listed securities had fallen below the $35 million minimum requirement for continued listing on the Nasdaq Capital Market for a period of at least 30 consecutive business days. Under Nasdaq Listing Rule 5810(c)(3)(C), we had 180 calendar days to regain compliance. Compliance can be achieved by meeting the $35 million minimum requirement for market value of listed securities for a minimum of 10 consecutive business days during the 180-day compliance period.  On October 23, 2013 we received written notification from The Nasdaq Stock Market that we had not regained compliance during that period and that our common stock would be delisted at the open of business on November 1, 2013.	Karlsson Note Amendments
	We have appealed the delisting action to the Nasdaq Hearing Panel and appeared at a hearing on December 11, 2013. A hearing request stays the delisting pending the Panel’s decision, and our common stock will continue to be listed on The Nasdaq Stock Market during this time.  If our appeal is unsuccessful we intend to takes the necessary steps to have our common stock quoted on the OTC Bulletin or in the “Pink Sheets.”	Under the First Karlsson Note Amendment, the maturity date was extended to the earlier of (i) 12 months following completion of a DFS and (ii) July 1, 2015.  An interim principal payment of $30.0 million is due on the earlier of (i) six months following completion of a DFS and (ii) January 2, 2015 (the “First Payment Date”). Prior to the First Karlsson Note Amendment, we were required to prepay the Karlsson Note with 40% of the net proceeds of any capital raised, whereas we are now required to prepay the Karlsson Note with 10% of the gross proceeds of any capital raised following the first $10.0 million of capital raised.  Under the First Karlsson Note Amendment, the annual interest rate of 9% changed from simple to compounding and is now payable quarterly in kind by automatically increasing the principal balance of the Karlsson Note.
		Under the First Karlsson Note Amendment, we are generally restricted from incurring debt other than Approved Subordinated Debt, which is defined as debt that (i) is unsecured, (ii) is subordinate to the Karlsson Note and (iii) may be convertible to equity if issued on or prior to September 10, 2013. We were also required to meet the following capital raising milestones: (i) $5.0 million by May 15, 2013, which was satisfied by the Very Hungry Parties’ $5.0 million subordinated loan (see below), (ii) an additional $7.0 million by June 17, 2013, of which all or any portion may be raised as Approved Subordinated Debt, (iii) an additional $18.0 million by September 10, 2013, of which all or any portion may be raised as Approved Subordinated Debt, and (iv) an additional $25.0 million no later than August 1, 2014, of which no more than $15.0 million may be raised as Approved Subordinated Debt. We were also required to deposit $9.2 million of the first $30.0 million of capital we raise into escrow, which funds may be released solely to fund specified development expenses for our potash project in the Holbrook Basin. Additionally, we were allowed to incur up to $10.0 million in additional Approved Subordinated Debt prior to the First Payment Date, but may incur no more than $1.0 million of debt after the First Payment Date.
		Prior to the First Karlsson Note Amendment, we had 15 days to cure a payment default and 30 days to cure any non-payment default after, in each case, receiving notice thereof. Under the First Karlsson Note Amendment, there are no notices or cure rights for any payment defaults or any defaults related to the financing milestones or escrow funding described above, or cross-defaults with other agreements. The majority of other non-monetary defaults now have a ten day notice and cure period.
		Under the First Karlsson Note Amendment, Karlsson may assign the Karlsson Note and any of the other Karlsson related documents following the earlier of (i) September 10, 2013, (ii) an event of default under the Karlsson Note, and (iii) once we have raised at least $30.0 million of capital.
		The First Extension Agreement contains customary lender releases and indemnification language.
		Consideration to Karlsson for First Extension Agreement
		In addition to changing the interest rate under the Karlsson Note from simple to compounding and payment of the tax gross-up amounts described above, as consideration to The Karlsson Group for entering into the First Extension Agreement and the related documents, we among other things, (i) increased The Karlsson Group’s royalty interest from 1% to 2% (Buffalo Management LLC has decreased its royalty interest from 2% to 1%  as described below) and eliminated the $75.0 million cap on The Karlsson Group’s previous 1% royalty interest, (ii) decreased the exercise price on The Karlsson Group’s warrants to purchase up to 112,117 shares of our common stock from $212.50 to $12.50 and allowed all of The Karlsson Group’s warrants to be exercisable on a cashless basis, (iii) provided Karlsson with an enhanced collateral package, including a parent guaranty from us and a pledge by us of 100% of the shares of our wholly owned subsidiary Prospect Global Resources Inc, a Delaware corporation and the owner of 100% of American West Potash LLC, (iv) extended the term of Karlsson’s right to receive 15% of the net proceeds from the sale of the Company by one year to August 1, 2017, and (v) agreed to pay Karlsson $275,000 for its attorneys’ fees and costs associated with consummation of the Extension Agreement and related agreements.
		Karlsson Second Extension Agreement
		On June 26, 2013, we entered into the Second Extension Agreement with The Karlsson Group which further restructured the Karlsson Note and related documents.
		Under this amendment, the interim principal payment of $30.0 million that was due on the earlier of (i) six months following completion of a definitive feasibility study and (ii) January 2, 2015 has been eliminated. We are also required to place 50% of the net proceeds of the next $24.0 million of capital we raise (for a total of $12.0 million) into escrow for Holbrook Project expenses. Two million dollars of the proceeds we received from our recent $5.0 million public offering (see below) were placed into this escrow, reducing our remaining escrow obligation to $10.0 million.
		We are also required to meet the following development milestones: (i) complete total depth on at least eight wells on or before November 1, 2013, (ii) deliver a completed and updated final NI 43-101 resource report on or before February 1, 2014, (iii) deliver completed metallurgical and rock mechanic test work results that will be used to complete the mine and processing plant designs for the definitive feasibility study on or before June 1, 2014 and (iv) deliver a completed and published definitive feasibility study on or before December 31, 2014.
		With this amendment, Karlsson may assign the Karlsson Note at any time to any person; previously it was assignable following the earlier of (i) September 10, 2013, (ii) an event of default under the Karlsson Note, and (iii) once we have raised at least $30.0 million of capital and there were restrictions on assignees. We also extended the term of Karlsson’s right to receive 15% of the net proceeds from the sale of the Company by six months to February 1, 2018.
		The Second Extension Agreement contains customary lender releases and indemnification language.
		Consideration to Karlsson for Second Extension Agreement
		With this amendment, we issued Karlsson a five year warrant to purchase 60,000 of our common shares at $6.00 per share and amended our registration rights agreement with Karlsson to include the shares issuable upon exercise of the new warrant. The warrant may be exercised on a cashless basis. We also reimbursed Karlsson $125,000 for its legal fees and expenses.
		Apollo Note Amendments
		Simultaneously with the execution of the First Extension Agreement and related documents, we agreed with Apollo to amend the Apollo Notes by extending the maturity dates from September 3, 2013 to the maturity date of the Karlsson Note (see above). The amendments also reduced our prepayment obligations from 33% of the net proceeds of any capital raised to 10% of the gross proceeds of any capital raised following our first $10.0 million of capital raised.
		Buffalo Management Royalty Amendment
		Simultaneously with the execution of the Extension Agreement and related documents, Buffalo Management agreed to a reduction in its royalty interest in us from 2% to 1%. In exchange for this reduction, we agreed to compensate Buffalo by giving Buffalo either, or a combination of, at its election, (i) equity securities (that may include common stock, preferred stock or warrants for common stock as mutually agreed) equal in value to the determined fair market value of the royalty surrendered or (ii) preferred stock that is redeemable after we commence receiving revenues from the Holbrook Project for the determined fair market value plus accrued interest; provided that no securities shall be issued to Buffalo prior to July 1, 2013 and provided further that in no event will any equity securities or securities convertible into equity securities issued to Buffalo (x) exceed 10% of our outstanding capital stock or (y) be redeemable for aggregate consideration exceeding 10% of our equity market capitalization. To value the surrendered royalty, we agreed to engage a third party valuation firm reasonably satisfactory to Buffalo. Buffalo is controlled by Chad Brownstein, our executive vice-chairman. Barry Munitz, our board chair owns a minority, non-voting interests in Buffalo. Our board has designated a committee composed of Ari Swiller and Conway Schatz to finalize these negotiations with Buffalo Management, neither of whom have any personal or economic interest in Buffalo.
		Nasdaq Notice of Listing Non-compliances
		On April 23, 2013, we received written notification from The Nasdaq Stock Market that for the last 30 consecutive business days, the bid price of our common stock had closed below the minimum $1.00 per share requirement for continued inclusion on the Nasdaq Capital Market based on Listing Rule 5550(a)(1).  We have 180 calendar days, or until September 20, 2013, to regain compliance with this rule. On April 25, 2013, we received a second written notification from The Nasdaq Stock Market that we are no longer in compliance with Nasdaq Listing Rule 5550(b)(2) because the market value of our listed securities has fallen below the $35 million minimum requirement for continued listing on the Nasdaq Capital Market for a period of at least 30 consecutive business days. We have 180 calendar days, or until September 22, 2013, to regain compliance. While we are considering available options to regain compliance with these Nasdaq rules, there can be no assurance that we will be able to do so, which would likely result in our common stock being delisted from the Nasdaq Capital Market. Delisting of our common stock from the Nasdaq Capital Market could substantially reduce the liquidity of your investment in our common stock.
		Receipt of $5.0 million Debt Financing
		On May 2, 2013 (and as further modified on May 22, 2013), we borrowed $5.0 million from two of our stockholders, Very Hungry LLC and Scott Reiman 1991 Trust (both related parties, see Note 12—Related Party Transactions for additional information) in exchange for $5.5 million in aggregate principal amounts of unsecured subordinated notes (“Bridge Loan Financing”). In consideration for this Bridge Loan Financing we reduced the exercise price on all warrants to purchase our common stock held by these parties to $15.00 per share (from exercise prices ranging from $212.50 per share to $150.00 per share) and extended the maturity of all these warrants to August 1, 2017. Very Hungry, LLC and the Scott Reiman 1991 Trust have agreed to invest their $5.5 million subordinated notes in convertible preferred stock that would be automatically convertible upon stockholder approval of the conversion into the same securities issued in the public offering that closed on June 26, 2013. If stockholder approval is not obtained, the subordinated promissory notes will mature on September 9, 2013.  The notes bear no interest.
		The gross proceeds from this Bridge Loan Financing satisfied the May 15, 2013 funding milestone previously required under The Karlsson Group debt (see above).
		Receipt of $5.0 million Public Offering
		On June 26, 2013, we closed a public offering of an aggregate of 833,334 units (the “Units”), consisting of 833,334 shares of the Company’s common stock, $0.001 par value (the “Common Stock”), together with (i) Series A Warrants to purchase 833,334 additional shares of Common Stock (the “Series A Warrants”) and (ii) Series B Warrants to purchase 833,334 additional shares of Common Stock and additional Series A Warrants to purchase 833,334 additional shares of Common Stock (the “Series B Warrants” and, together with the Series A Warrants, the “Warrants”), at a public offering price of $6.00 per Unit in an underwritten public offering (the “Offering”). The underwriter exercised its option to purchase up to an additional 23,464 warrant units consisting of one Series A Warrant and one Series B Warrant at an exercise price of $0.005 per unit, less underwriting commissions, solely to cover overallotments.
		The Series A Warrants were immediately exercisable on June 26, 2013 at an initial exercise price of $6.00 per share and expire on June 26, 2018. The Series B Warrants were exercisable immediately on June 26, 2013 at an exercise price of $6.00 per share. The Series B Warrants will expire at the close of business on November 1, 2013.
		The Series A Warrants and the Series B Warrants were issued separately from the Common Stock included in the Units and may be transferred separately immediately thereafter. Neither the Series A Warrants nor the Series B Warrants will be listed on any national securities exchange or other trading market, and no trading market for such Warrants is expected to develop.
		The Series A Warrants contain full ratchet anti-dilution protection upon the issuance of any Common Stock, securities convertible into Common Stock, or certain other issuances at a price below the then-existing exercise price of the Series A Warrants, subject to certain exceptions.

Restatement

Restatement	6 Months Ended							12 Months Ended
	Sep. 30, 2013							Mar. 31, 2013
Restatement	'							'
Restatement	'							'
	Note 20—Restatement							Note 19—Restatement
	The Company made a determination following the completion of the Resource Report and PEA in late 2011 that it had met the requirements to transition from an exploration stage to a development stage company and accordingly began capitalizing all development related costs related to the Holbrook Project as of January 1, 2012. Prior to this date and while we were in the exploration stage, all costs related to the Holbrook Project were expensed as incurred.							The Company made a determination following the completion of the Resource Report and PEA in late 2011 that it had met the requirements to transition from an exploration stage to a development stage company and accordingly began capitalizing all development related costs related to the Holbrook Project as of January 1, 2012. Prior to this date and while we were in the exploration stage, all costs related to the Holbrook Project were expensed as incurred.
	The Company has now determined that its capitalization of these development related costs was not fully in accordance with U.S. GAAP and has amended and restated its September 30, 2013 consolidated financial statements to expense certain costs previously capitalized in the balance sheet accounts for Mineral Properties and Deferred Fees. The net effect of these adjustments on the September 30, 2013 balance sheet reduced the Mineral Properties account balance to $13.7 million from its previously reported balance of $45.1 million and the Deferred Fees account balance to nil from its previously reported balance of $7.3 million. With this restatement, we also reduced our previously reported expense for equity compensation related to unvested, forfeited stock options.  This resulted in a reduction of $1.4 million in our General and Administrative expenses for the six months ended September 30, 2013.							The Company has now determined that its capitalization of these development related costs was not fully in accordance with U.S. GAAP and has amended and restated its March 31, 2012 and March 31, 2013 consolidated financial statements to expense certain costs previously capitalized in the balance sheet accounts for Mineral Properties and Deferred Fees. The net effect of these adjustments on the March 31, 2013 balance sheet was a reduction in the Mineral Properties account balance to $13.7 million from its previously reported balance of $40.0 million and the Deferred Fees account balance to nil from its previously reported balance of $7.8 million. With this restatement, we also reduced our previously reported expense for equity compensation related to unvested, forfeited stock options.  This resulted in a reduction of $0.6 million in our General and Administrative expenses for the year ended March 31, 2013 and nil for the year ended March 31, 2012.
	The following tables reflect the adjustment and restated amounts:							Additionally, we retroactively adjusted for the change in equity as a result of the 1-for-50 reverse stock split that occurred on September 4, 2013.
	Consolidated Balance Sheet							The following tables reflect the adjustment and restated amounts:
		September 30, 2013						Consolidated Balance Sheet
		As Reported		Adjustment		As Restated
		($000’s)		($000’s)		($000’s)			March 31, 2013
	ASSETS								As Reported		Adjustment		As Restated
	Mineral properties	45,140		(31,450	)	13,690			($000’s)		($000’s)		($000’s)
	Deferred fees	7,313		(7,313	)	—		ASSETS
	Total noncurrent assets	53,647		(38,763	)	14,884		Mineral properties	39,994		(26,304	)	13,690
	Total assets	56,860		(38,763	)	18,097		Deferred fees	7,751		(7,751	)	—
	LIABILITIES AND EQUITY							Total noncurrent assets	48,842		(34,055	)	14,787
	Additional paid-in capital	44,119		(6,789	)	37,330		Total assets	51,062		(34,055	)	17,007
	Losses accumulated in the exploration stage	(145,624	)	(31,974	)	(177,598	)	SHAREHOLDER’S DEFICIT
	Total shareholder’s deficit	(101,501	)	(38,763	)	(140,264	)	Common stock	73		(72	)	1
	Total liabilities, redeemable preferred stock and shareholders’ deficit	56,860		(38,763	)	18,097		Additional paid-in capital	35,641		(5,306	)	30,335
								Losses accumulated in exploration stage	(131,577	)	(28,677	)	(160,254	)
	Consolidated Statement of Operations							Total shareholder’s deficit - Prospect Global Resources, Inc.	(95,863	)	(34,055	)	(129,918	)
								Total liabilities and shareholder’s deficit	51,062		(34,055	)	17,007
		Three months ended
		September 30, 2013						Consolidated Statement of Operations
		As Reported		Adjustment		As Restated
		($000’s)		($000’s)		($000’s)			Twelve months ended
	Exploration	—		2,859		2,859			March 31, 2013
	General and administrative	1,902		359		2,261			As Reported		Adjustment		As Restated
	Off-take arrangement fee	—		(438	)	(438	)		($000’s)		($000’s)		($000’s)
	Total expenses	3,652		2,780		6,432		Exploration	—		18,575		18,575
	Loss from operations	(3,652	)	(2,780	)	(6,432	)	General and administrative	42,737		5,721		48,458
	Net loss	(15,581	)	(2,780	)	(18,361	)	Off-take arrangement fee	—		7,751		7,751
	Net loss attributable to non-controlling interest	—		—		—		Total expenses	42,737		32,047		74,784
	Net loss attributable to Prospect Global Resources, Inc.	(15,581	)	(2,780	)	(18,361	)	Loss from operations	(42,737	)	(32,047	)	(74,784	)
	Loss per share - basic and diluted	(5.75	)	(1.02	)	(6.77	)	Net loss	(51,878	)	(32,047	)	(83,925	)
								Net loss attributable to non-controlling interest	12		4,059		4,071
	Consolidated Statement of Operations							Net loss attributable to Prospect Global Resources, Inc.	(51,866	)	(27,988	)	(79,854	)
								Loss per share - basic and diluted	(44.91	)	(24.23	)	(69.14	)
		Six Months ended
		September 30, 2013						Consolidated Statement of Operations
		As Reported		Adjustment		As Restated
		($000’s)		($000’s)		($000’s)			Inception through
	Exploration	—		4,071		4,071			March 31, 2013
	General and administrative	4,691		(336	)	4,355			As Reported		Adjustment		As Restated
	Off-take arrangement fee	—		(438	)	(438	)		($000’s)		($000’s)		($000’s)
	Total expenses	9,742		3,297		13,039		Exploration	5,600		19,623		25,223
	Loss from operations	(9,742	)	(3,297	)	(13,039	)	General and Administrative	61,102		6,049		67,151
	Net loss	(14,047	)	(3,297	)	(17,344	)	Off-take arrangement fee	—		7,751		7,751
	Net loss attributable to Prospect Global Resources, Inc.	(14,047	)	(3,297	)	(17,344	)	Total expenses	66,702		33,423		100,125
	Loss per share - basic and diluted	(6.69	)	(1.55	)	(8.24	)	Loss from operations	(66,702	)	(33,423	)	(100,125	)
								Net loss	(134,668	)	(33,423	)	(168,091	)
	Consolidated Statement of Operations							Net loss attributable to non-controlling interest	3,090		4,747		7,837
								Net loss attributable to Prospect Global Resources, Inc.	(131,578	)	(28,676	)	(160,254	)
		Inception through						Loss per share - basic and diluted	(183.77	)	(40.05	)	(223.82	)
		September 30, 2013
		As Reported		Adjustment		As Restated		Consolidated Statement of Cash Flows
		($000’s)		($000’s)		($000’s)
	Exploration	5,600		23,694		29,294			Twelve months ended
	General and administrative	59,826		5,714		65,540			March 31, 2013
	Off-take arrangement fee	—		7,313		7,313			As Reported		Adjustment		As Restated
	Total expenses	76,443		36,721		113,164			($000’s)		($000’s)		($000’s)
	Loss from operations	(76,443	)	(36,721	)	(113,164	)	Operating activities:
	Net loss	(148,714	)	(36,721	)	(185,435	)	Net loss	(51,878	)	(32,047	)	(83,925	)
	Net loss attributable to non-controlling interest	3,090		4,747		7,837		Services paid for with securities	776		3,877		4,653
Net loss attributable to Prospect Global Resources, Inc.	(145,624	)	(31,974	)	(177,598	)	Stock based compensation	13,794		2,445		16,239
Loss per share - basic and diluted	(124.71	)	(27.35	)	(152.06	)	Deferred fees	(2,287	)	2,287		—
							Account payable	497		1,682		2,179
Consolidated Statement of Cash Flows							Accrued liabilities	(915	)	4,578		3,663
							Net cash used in operating activities	(17,645	)	(17,178	)	(34,823	)
	Six months ended
	September 30, 2013						Investing activities:
	As Reported		Adjustment		As Restated		Mineral properties	(18,777	)	17,178		(1,599	)
	($000’s)		($000’s)		($000’s)		Net cash used in investing activities	(19,796	)	17,178		(2,618	)
Operating activities:
Net loss	(14,047	)	(3,297	)	(17,344	)	Consolidated Statement of Cash Flows
Stock based compensation	1,103		(928	)	175
Account payable and accrued liabilities	223		(2,187	)	(1,964	)		Inception through
Net cash used in operating activities	(3,810	)	(6,412	)	(10,222	)		March 31, 2013
								As Reported		Adjustment		As Restated
Investing activities:								($000’s)		($000’s)		($000’s)
Mineral properties	(6,412	)	6,412		—		Operating activities:
Net cash used in investing activities	(6,807	)	6,412		(395	)	Net loss	(134,668	)	(33,423	)	(168,091	)
							Services paid for with securities	3,156		3,877		7,033
Consolidated Statement of Cash Flows							Stock based compensation	23,512		2,445		25,957
							Deferred fees	(2,288	)	2,288		—
	Inception through						Accounts payable	1,169		1,681		2,850
	September 30, 2013						Accrued liabilities	(531	)	5,049		4,518
	As Reported		Adjustment		As Restated		Net cash used in operating activities	(29,360	)	(18,083	)	(47,443	)
	($000’s)		($000’s)		($000’s)
Operating activities:							Investing activities:
Net loss	(148,715	)	(36,720	)	(185,435	)	Mineral properties	(20,773	)	18,083		(2,690	)
Services paid for with securities	3,695		3,877		7,572		Net cash used in investing activities	(21,879	)	18,083		(3,796	)
Stock based compensation	18,648		1,517		20,165
Deferred fees	(2,288	)	2,288		—		Consolidated Balance Sheet
Account payable and accrued liabilities	861		4,543		5,404
Net cash used in operating activities	(33,170	)	(24,495	)	(57,665	)		March 31, 2012
								As Reported		Adjustment		As Restated
Investing activities:								($000’s)		($000’s)		($000’s)
Mineral properties	(27,185	)	24,495		(2,690	)	ASSETS
Net cash used in investing activities	(28,686	)	24,495		(4,191	)	Mineral properties	13,468		(1,377	)	12,091
							Total noncurrent assets	13,630		(1,377	)	12,253
The Company also restated the September 30, 2012 interim consolidated financial statements to expense certain costs previously capitalized in the balance sheet accounts for Mineral Properties and Deferred Fees. The details and effects of these restatements on the financial statements for the three and six months ended September 30, 2012 are outlined in the tables below. We have also included the effects of the 1 for 50 reverse stock split that occurred on September 4, 2013.							Total assets	25,784		(1,377	)	24,407
							SHAREHOLDER’S EQUITY
Consolidated Statement of Operations							Common Stock	40		(40	)	—
							Additional paid-in capital	91,957		40		91,997
	Three months						Losses accumulated in exploration stage	(79,711	)	(688	)	(80,400	)
	ended September						Total shareholder’s equity - Prospect Global Resources, Inc.	12,285		(688	)	11,597
	30, 2012						Non-controlling interest	7,923		(689	)	7,234
	As Reported		Adjustment		As Restated		Total shareholder’s equity	20,208		(1,377	)	18,831
	($000’s)		($000’s)		($000’s)		Total liabilities and shareholder’s deficit	25,784		(1,377	)	24,407
Exploration	—		5,802		5,802
General and administrative (1)	12,080		3,167		15,247		Consolidated Statement of Operations
Total expenses	12,080		8,969		21,049
Loss from operations	(12,080	)	(8,969	)	(21,049	)		Fiscal Year ending
Net loss	(13,951	)	(8,969	)	(22,920	)		March 31, 2012
Net loss attributable to non-controlling interest	6		807		813			As Reported		Adjustment		As Restated
Net loss attributable to Prospect Global Resources, Inc.	(13,945	)	(8,162	)	(22,107	)		($000’s)		($000’s)		($000’s)
Loss per share - basic and diluted	(12.75	)	(7.46	)	(20.21	)	Exploration	4,954		1,048		6,002
							General and administrative	16,877		329		17,206
(1)   Includes warrant expense of $5,619.							Total expenses	21,831		1,377		23,208
							Loss from operations	(21,831	)	(1,377	)	(23,208	)
Consolidated Statement of Operations							Net loss	(65,580	)	(1,377	)	(66,957	)
							Net loss attributable to non-controlling interest	2,702		689		3,391
	Six Months ended						Net loss attributable to Prospect Global Resources, Inc.	(62,878	)	(688	)	(63,566	)
	September 30,						Loss per share - basic and diluted	(112.28	)	(1.23	)	(113.51	)
	2012
	As Reported		Adjustment		As Restated		Consolidated Statement of Operations
	($000’s)		($000’s)		($000’s)
Exploration	—		11,370		11,370			Inception through
General and administrative (1)	15,408		4,099		19,507			March 31, 2012
Total expenses	15,408		15,469		30,877			As Reported		Adjustment		As Restated
Loss from operations	(15,408	)	(15,469	)	(30,877	)		($000’s)		($000’s)		($000’s)
Net loss	(17,279	)	(15,469	)	(32,748	)	Exploration	5,600		1,048		6,648
Net loss attributable to non-controlling interest	13		4,057		4,070		General and administrative	18,364		329		18,693
Net loss attributable to Prospect Global Resources, Inc.	(17,266	)	(11,412	)	(28,678	)	Total expenses	23,964		1,377		25,341
Loss per share - basic and diluted	(18.31	)	(12.10	)	(30.41	)	Loss from operations	(23,964	)	(1,377	)	(25,341	)
							Net loss	(82,789	)	(1,377	)	(84,166	)
(1)   Includes warrant expense of $5,619.							Net loss attributable to non-controlling interest	3,078		689		3,767
							Net loss attributable to Prospect Global Resources, Inc.	(79,711	)	(688	)	(80,399	)
Consolidated Statement of Cash Flows							Loss per share - basic and diluted	(172.91	)	(1.49	)	(174.40	)
	Six months ended						Consolidated Statement of Cash Flows
	September 30,
	2012							Fiscal Year ended
	As Reported		Adjustment		As Restated			March 31, 2012
	($000’s)		($000’s)		($000’s)			As Reported		Adjustment		As Restated
Operating activities								($000’s)		($000’s)		($000’s)
Net loss	(17,279	)	(15,469	)	(32,748	)	Operating Activities:
Stock based compensation and warrant expense	8,228		2,454		10,682		Net loss	(65,580	)	(1,377	)	(66,957	)
Account payable	(249	)	2,348		2,099		Accrued liabilities	299		471		770
Accrued liabilities	980		1,680		2,660		Net cash used in operating activities	(10,443	)	(906	)	(11,349	)
Net cash used in operating activities	(5,719	)	(8,987	)	(14,706	)
							Investing Activities:
Investing activities							Mineral Properties	(1,949	)	906		(1,043	)
Mineral properties	(9,085	)	8,987		(98	)	Net cash used in investing activities	(2,030	)	906		(1,124	)
Net cash used in investing activities	(9,481	)	8,987		(494	)
							Consolidated Statement of Cash Flows
								Inception through
								March 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(82,789	)	(1,377	)	(84,166	)
							Accrued liabilities	386		471		857
							Net cash used in operating activities	(11,712	)	(906	)	(12,618	)
							Investing activities:
							Mineral properties	(1,997	)	906		(1,091	)
							Net cash used in investing activities	(2,086	)	906		(1,180	)
							The Company has also restated the June 30, 2012, September 30, 2012 and December 31, 2012 interim consolidated financial statements to expense certain costs previously capitalized in the balance sheet accounts for Mineral Properties and Deferred Fees and to adjust for certain expenses related to unvested, forfeited stock options.  As a result, the interim consolidated statements of operations for the three month periods ended June 30, 2012, September 30, 2012 and December 31, 2012 were amended and restated to expense $6.5 million, $9.0 million and $14.7 million, respectively, of costs previously capitalized. The interim consolidated statement of operations for the six month period ended September 30, 2012 and the nine month periods ended December 31, 2012 were amended and restated to expense $15.5 million and $30.2 million(1), respectively, of costs previously capitalized.  Corresponding changes were made to the interim consolidated statement of operations and the interim consolidated statements of cash flows for the periods from inception and the interim consolidated statements of cash flows for the three months ended June 30, 2012, the six months ended September 30, 2012, and the nine months ended December 31, 2012.
							(1) $29.8 million net of the $0.4 million reduction in General and Administrative expenses for unvested, forfeited stock options for the nine months ended December 31, 2012.
							Consolidated Balance Sheet
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	20,067		(7,877	)	12,190
							Total noncurrent assets	20,371		(7,877	)	12,494
							Total assets	22,071		(7,877	)	14,194
							SHAREHOLDER’S EQUITY
							Common stock	39		(39	)	—
							Additional paid-in capital	86,719		39		86,758
							Losses accumulated in exploration stage	(83,032	)	(3,939	)	(86,971	)
							Total shareholder’s equity - Prospect Global Resources, Inc.	4,727		(3,938	)	789
							Non-controlling interest	7,915		(3,939	)	3,976
							Total shareholder’s equity	12,642		(7,877	)	4,765
							Total liabilities and shareholder’s equity	22,071		(7,877	)	14,194
							Consolidated Statement of Operations
								Three months ended
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,568		5,568
							General and administrative	3,328		932		4,260
							Total expenses	3,328		6,500		9,828
							Loss from operations	(3,328	)	(6,500	)	(9,828	)
							Net loss	(3,328	)	(6,500	)	(9,828	)
							Net loss attributable to non-controlling interest	7		3,250		3,257
							Net loss attributable to Prospect Global Resources, Inc.	(3,321	)	(3,250	)	(6,571	)
							Loss per share - basic and diluted	(4.20	)	(4.12	)	(8.32	)
							Consolidated Statement of Operations
								Inception through June
								30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		6,616		12,216
							General and administrative	21,692		1,261		22,953
							Total expenses	27,292		7,877		35,169
							Loss from operations	(27,292	)	(7,877	)	(35,169	)
							Net loss	(86,117	)	(7,877	)	(93,994	)
							Net loss attributable to non-controlling interest	3,085		3,939		7,024
							Net loss attributable to Prospect Global Resources, Inc.	(83,032	)	(3,938	)	(86,970	)
							Loss per share - basic and diluted	(164.42	)	(7.80	)	(172.22	)
							Consolidated Statement of Cash Flows
								Three months ended
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(3,328	)	(6,500	)	(9,828	)
							Accounts payable	434		1,722		2,156
							Accrued liabilities	258		1,088		1,346
							Net cash used in operating activities	(2,079	)	(3,690	)	(5,769	)
							Investing activities:
							Mineral properties	(3,788	)	3,690		(98	)
							Net cash used in investing activities	(8,937	)	3,690		(5,247	)
							Consolidated Statement of Cash Flows
								Inception through June
								30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(86,117	)	(7,877	)	(93,994	)
							Accounts payable	1,106		1,723		2,829
							Accrued liabilities	644		1,559		2,203
							Net cash used in operating activities	(13,292	)	(4,595	)	(17,887	)
							Investing activities:
							Mineral properties	(5,784	)	4,595		(1,189	)
							Net cash used in investing activities	(11,523	)	4,595		(6,928	)
							Consolidated Balance Sheet
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	29,036		(16,846	)	12,190
							Total noncurrent assets	29,638		(16,846	)	12,792
							Total assets	41,604		(16,846	)	24,758
							SHAREHOLDER’S DEFICIT
							Common stock	55		(55	)	—
							Additional paid-in capital	1,275		(4,691	)	(3,416	)
							Losses accumulated in exploration stage	(96,977	)	(12,100	)	(109,077	)
							Total shareholder’s (deficit) - Prospect Global Resources, Inc.	(95,646	)	(16,846	)	(112,492	)
							Total shareholder’s (deficit)	(95,646	)	(16,846	)	(112,492	)
							Total liabilities and shareholder’s deficit (deficit)	41,604		(16,846	)	24,758
							Consolidated Statement of Operations
								Three months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,802		5,802
							General and administrative	12,080		3,167		15,247
							Total expenses	12,080		8,969		21,049
							Loss from operations	(12,080	)	(8,969	)	(21,049	)
							Net loss	(13,951	)	(8,969	)	(22,920	)
							Net loss attributable to non-controlling interest	6		807		813
							Net loss attributable to Prospect Global Resources, Inc.	(13,945	)	(8,162	)	(22,107	)
							Loss per share - basic and diluted	(12.75	)	(7.46	)	(20.21	)
							Consolidated Statement of Operations
								Six Months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		11,370		11,370
							General and administrative	15,408		4,099		19,507
							Total expenses	15,408		15,469		30,877
							Loss from operations	(15,408	)	(15,469	)	(30,877	)
							Net loss	(17,279	)	(15,469	)	(32,748	)
							Net loss attributable to non-controlling interest	13		4,057		4,070
							Net loss attributable to Prospect Global Resources, Inc.	(17,266	)	(11,412	)	(28,678	)
							Loss per share - basic and diluted	(18.31	)	(12.10	)	(30.41	)
							Consolidated Statement of Operations
								Inception through
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		12,418		18,018
							General and administrative	33,771		4,428		38,199
							Total expenses	39,371		16,846		56,217
							Loss from operations	(39,371	)	(16,846	)	(56,217	)
							Net loss	(100,068	)	(16,846	)	(116,914	)
							Net loss attributable to non-controlling interest	3,091		4,746		7,837
							Net loss attributable to Prospect Global Resources, Inc.	(96,977	)	(12,100	)	(109,077	)
							Loss per share - basic and diluted	(168.66	)	(21.04	)	(189.70	)
							Consolidated Statement of Cash Flows
								Six months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities
							Net loss	(17,279	)	(15,469	)	(32,748	)
							Stock based compensation and warrant expense	8,228		2,454		10,682
							Account payable	(249	)	2,348		2,099
							Accrued liabilities	980		1,680		2,660
							Net cash used in operating activities	(5,719	)	(8,987	)	(14,706	)
							Investing activities
							Mineral properties	(9,085	)	8,987		(98	)
							Net cash used in investing activities	(9,481	)	8,987		(494	)
							Consolidated Statement of Cash Flows
								Inception through
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating Activities:
							Net loss	(100,068	)	(16,846	)	(116,914	)
							Stock based compensation	17,946		2,454		20,400
							Account payable	423		2,348		2,771
							Accrued liabilities	1,365		2,151		3,516
							Net cash used in operating activities	(17,430	)	(9,893	)	(27,323	)
							Investing Activities:
							Mineral Properties	(11,082	)	9,893		(1,189	)
							Net cash used in investing activities	(11,567	)	9,893		(1,674	)
							Consolidated Balance Sheet
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	35,991		(23,801	)	12,190
							Deferred fees	7,751		(7,751	)	—
							Total noncurrent assets	44,517		(31,554	)	12,963
							Total assets	55,304		(31,554	)	23,750
							SHAREHOLDER’S DEFICIT
							Common stock	73		(72	)	1
							Additional paid-in capital	34,265		(5,046	)	29,219
							Losses accumulated in exploration stage	(116,727	)	(26,436	)	(143,163	)
							Total shareholder’s deficit - Prospect Global Resources, Inc.	(82,390	)	(31,554	)	(113,944	)
							Non-controlling interest	—		—		—
							Total shareholder’s deficit	(82,390	)	(31,554	)	(113,944	)
							Total liabilities and shareholder’s deficit	55,304		(31,554	)	23,750
							Consolidated Statement of Operations
								Three months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,646		5,646
							General and administrative	15,110		937		16,047
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	15,110		14,334		29,444
							Loss from operations	(15,110	)	(14,334	)	(29,444	)
							Net loss	(19,751	)	(14,334	)	(34,085	)
							Net loss attributable to non-controlling interest	—		—		—
							Net loss attributable to Prospect Global Resources, Inc.	(19,751	)	(14,334	)	(34,085	)
							Loss per share - basic and diluted	(15.36	)	(11.14	)	(26.50	)
							Consolidated Statement of Operations
								Nine Months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		17,016		17,016
							General and administrative	30,518		5,036		35,554
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	30,518		29.803,		60,321
							Loss from operations	(30,518	)	(29,803	)	(60,321	)
							Net loss	(37,030	)	(29,803	)	(66,833	)
							Net loss attributable to non-controlling interest	12		4,057		4,069
							Net loss attributable to Prospect Global Resources, Inc.	(37,018	)	(25,746	)	(62,764	)
							Loss per share - basic and diluted	(34.99	)	(24.33	)	(59.32	)
							Consolidated Statement of Operations
								Inception through
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		18,064		23,664
							General and administrative	48,881		5,365		54,246
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	54,481		31,180		85,661
							Loss from operations	(54,481	)	(31,180	)	(85,661	)
							Net loss	(119,819	)	(31,180	)	(150,999	)
							Net loss attributable to non-controlling interest	3,091		4,746		7,837
							Net loss attributable to Prospect Global Resources, Inc.	(116,728	)	(23,434	)	(140,162	)
							Loss per share - basic and diluted	(182.10	)	(36.56	)	(218.66	)
							Consolidated Statement of Cash Flows
								Nine months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(37,030	)	(29,803	)	(66,833	)
							Services paid for with securities	672		3,875		4,547
							Stock based compensation	12,649		2,578		15,227
							Deferred fees	(1,938	)	1,938		—
							Accounts payable	(1,773	)	3,191		1,418
							Accrued liabilities	1,781		2,780		4,561
							Net cash used in operating activities	(12,650	)	(15,441	)	(28,091	)
							Investing activities:
							Mineral properties	(15,539	)	15,441		(98	)
							Net cash used in investing activities	(16,181	)	15,441		(740	)
							Consolidated Statement of Cash Flows
								Inception through
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities
							Net loss	(119,819	)	(31,180	)	(150,999	)
							Services paid for with securities	3,052		3,876		6,928
							Stock based compensation	22,367		2,578		24,945
							Deferred fees	(1,938	)	1,938		—
							Accounts payable	(1,101	)	3,191		2,090
							Accrued liabilities	2,165		3,252		5,417
							Net cash used in operating activities	(24,363	)	(16,345	)	(40,708	)
							Investing activities
							Mineral properties	(17,535	)	16,345		(1,190	)
							Net cash used in investing activities	(18,266	)	16,345		(1,921	)
							Controls and Procedures
							Evaluation of Disclosure Controls and Procedures (Restated)
							The Company maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in its filings with the SEC is recorded, processed, summarized and reported within the time period specified in the SEC’s rules and forms, and that such information is accumulated and communicated to management, including the Company’s Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), as appropriate, to allow timely decisions regarding required disclosure based on the definition of “disclosure controls and procedures” as defined in Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). In designing and evaluating the disclosure controls and procedures, management has recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management is required to apply judgment in evaluating the Company’s controls and procedures.
							Prior to the filing of the Company’s Form 10-K for the fiscal year ended March 31, 2013, Company management, with the participation of the Company’s CEO and CFO, carried out an evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act) as of March 31, 2013.
							Based on that evaluation, the CEO and CFO concluded that the Company’s disclosure controls and procedures were effective as of March 31, 2013. Subsequently, the Company determined that there was a material weakness in its internal controls over financial reporting as of March 31, 2013 due to the restatement described below and in Note 19 to the consolidated financial statements included elsewhere in this report. As a result, the Company’s management, with the participation of the CEO and CFO, reevaluated the effectiveness of the Company’s disclosure controls and procedures as of March 31, 2013, and the CEO and CFO of the Company concluded that, because of the material weakness in the Company’s internal control over financial reporting described below, the Company’s disclosure controls and procedures were not effective as of March 31, 2013.
							Management’s Report on Internal Control Over Financial Reporting (Restated)
							Management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act. The Company’s internal control over financial reporting is designed, under the supervision of the Company’s CEO and CFO, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America (GAAP). The Company’s internal control over financial reporting includes those policies and procedures that: (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with GAAP, and that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the financial statements.
							All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with GAAP.
							Prior to filing our 10-K, Company management conducted an evaluation of the effectiveness of its internal control over financial reporting as of March 31, 2013. This evaluation was based on the framework in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on the Company’s evaluation under the framework in Internal Control—Integrated Framework, our CEO and CFO had believed that our internal control over financial reporting was effective as of March 31, 2013.
							Subsequent to that evaluation, in connection with the restatement discussed in Note 19 to the consolidated financial statements included elsewhere in this report, management, with the participation of our CEO and CFO, re-evaluated the effectiveness of our internal control over financial reporting and, based on the criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission, determined that the material weakness described below existed as of March 31, 2013. Accordingly, as a result of this material weakness, our CEO and CFO concluded that our internal control over financial reporting was not effective as of March 31, 2013. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the annual or interim financial statements will not be prevented or detected on a timely basis.
							Management has considered the underlying causes for this Amendment, as more fully described in the Explanatory Note and in Note 19 to the consolidated financial statements included elsewhere in this report, and determined that the restatements were due to a material weakness in the Company’s internal control over financial reporting regarding the requirements under United States generally accepted accounting principles (“U.S. GAAP”) and SEC Industry Guide 7. However, management also believes the circumstances leading to the restatements were isolated incidents related to the interpretation of SEC Industry Guide 7 and specific accounting literature pertaining to unvested stock compensation under U.S. GAAP and that no further corrective action is necessary to remedy the material weakness.
							There have been no changes in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended March 31, 2013 that have materially affected, or that are reasonably likely to materially affect, the Company’s internal control over financial reporting.

Summary_of_Significant_Account1

Summary of Significant Accounting Principles (Policies)	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Summary of Significant Accounting Principles	'	'
Basis of Presentation	'	'
	Basis of Presentation	Basis of Presentation
	The accompanying unaudited Interim Condensed Consolidated Financial Statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), the instructions to Form 10-Q and Article 10 of Regulation S-X. In management’s opinion, all of the normal and recurring adjustments necessary to fairly present the interim financial information set forth herein have been included. The results of operations for interim periods are not necessarily indicative of the operating results of a full year or of future years. These interim financial statements follow the same accounting policies and methods of their application as the most recent annual financial statements unless specifically discussed below. These interim financial statements are unaudited and should be read in conjunction with the Company’s audited financial statements and related footnotes for the year ended March 31, 2013 to be included in the Company’s Annual Report on Form 10-K/A to be filed with the SEC as soon as administratively possible.	The accompanying consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), the instructions to Form 10-K and applicable Articles of Regulation S-X. In the opinion of management, all of the normal and recurring adjustments necessary to fairly present the financial information set forth herein have been included.
	We have incurred net losses totaling $177.6 million since inception and at September 30, 2013 we had a working capital deficit $23.7 million.  These consolidated interim financial statements have been prepared on a going concern basis, which contemplates the realization of assets and settlement of liabilities in the normal course of business for the foreseeable future and do not give effect to any adjustments which would be necessary should the Company be unable to continue as a going concern.
Use of Estimates	'	'
	Use of Estimates	Use of Estimates
	The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses incurred during the reporting period. The Company bases its estimates on various assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions.	The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses incurred during the reporting period. The Company bases its estimates on various assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions. Significant estimates with regard to the Company’s consolidated financial statements include the fair value of mineral interests contributed by The Karlsson Group; the calculation of certain conversion features of the Company’s secured convertible notes; the embedded derivative liabilities associated with those secured convertible notes and the outstanding warrants issued by the Company (and the associated changes period to period); stock-based compensation; the liability associated with the Grandhaven Option; the fair market value of consideration associated with The Karlsson Group Acquisition and the Karlsson Note Tax Gross-Up (as defined in Note 8—Debt) amount.
Mineral Properties	'	'
	Mineral Properties	Mineral Properties
	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.
	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.
Allocation of Costs	'	'
	Allocation of Costs
	From time to time our capital raise activities will result in the issuance of more than one security, such as shares of our common stock and warrants to purchase our common stock.  In these cases, we will allocate the costs of that capital raise between the various securities issued based on the relative fair value of each security issued.
Recent Accounting Pronouncements	'	'
	Recent Accounting Pronouncements	Recent Accounting Pronouncements
	The Company has considered recently issued accounting pronouncements and does not believe that such pronouncements are of significance, or potential significance, to the Company.	The Company has considered recently issued accounting pronouncements and does not believe that such pronouncements are of significance, or potential significance, to the Company.

Other_Current_Assets_Tables

Other Current Assets (Tables)	6 Months Ended					12 Months Ended
	Sep. 30, 2013					Mar. 31, 2013
Other Current Assets	'					'
Schedule of other current assets	'					'
		September 30, 2013		March 31, 2013			March 31, 2013		March 31, 2012
		(thousands)		(thousands)			(thousands)		(thousands)
		(unaudited)				Prepaid insurance & rent	$	276	$	223
	Prepaid insurance & rent	$	281	$	276	Other	389		605
	Land purchase option	—		500		SK Land Holdings Option	500		—
	Other	40		395		Total other current assets	$	1,165	$	828
	Total other current assets	$	321	$	1,171

Accounts_Payable_and_Accrued_L1

Accounts Payable and Accrued Liabilities (Tables)	6 Months Ended
	Sep. 30, 2013
Accounts Payable and Accrued Liabilities	'
Schedule of accounts payable and accrued liabilities	'
		September 30, 2013		March 31, 2013
		(thousands)		(thousands)
		(unaudited)
	Drilling/permitting	$	543	$	382
	Engineering	1,505		1,796
	Private leaseholder obligations	—		1,500
	Legal	664		720
	Board of Directors’ fees	—		125
	Off-take arrangement fee	50		1,588
	Accrued interest	—		7,251
	Compensation and other	1,866		1,245
	Total accounts payable and accrued liabilities	$	4,628	$	14,607

Debt_and_Tax_Compensation_on_N1

Debt and Tax Compensation on Note Payable (Tables)	6 Months Ended							12 Months Ended
	Sep. 30, 2013							Mar. 31, 2013
Debt	'							'
Schedule of company's indebtedness	'							'
									March 31, 2013			March 31, 2012
		September 30, 2013			March 31, 2013				(thousands)			(thousands)
		(thousands)			(thousands)			Karlsson senior secured note	$	115,282		$	—
		(unaudited)						Apollo unsecured notes	6,750			—
	Karlsson senior secured note	$	117,472		$	115,282		Tax gross-up on Karlsson senior secured note	6,226			—
	Apollo unsecured notes	6,750			6,750			Total debt	128,258			—
	Tax compensation on Karlsson senior secured note	17,629			6,226			Less: current portion	(128,258		)	—
	Total debt and tax compensation	141,851			128,258			Total long-term debt	$	—		$	—
	Less: Unamortized debt discount*	(26,329		)	—
	Less: current portion of debt and tax compensation	(1,164		)	(128,258		)
	Total long-term debt and tax compensation	$	114,358		$	—
	* Includes gross discount on the Karlsson Note of $34,528, net of amortized discount of $8,199.

Related_Party_Transactions_Tab

Related Party Transactions (Tables)	6 Months Ended
	Sep. 30, 2013
Related Party Transactions	'
Schedule of Stock and Warrants outstanding for Quincy Prelude and Buffalo's holdings	'
	As of September 30, 2013, Quincy Prelude and Buffalo’s holdings included the following:
	Stock and Warrants	Quantity	Strike Price ($)		Expiration Date
	Warrants	36,271	187.5		2016
	Warrants	35,410	130		2017
	Warrants	1,787,171	4.05		2018
	Common Stock	63,763	N/A		N/A
	Preferred Stock 8% Cumulative	15,000,000	N/A		N/A
	Options*	4,000	130		2022
	Options*	2,000	212.5		2021
	*Options held by Chad Brownstein, our Executive Vice Chairman
Schedule of holdings	'
	At September 30, 2013, Hexagon and its affiliates’ holdings consisted of the following:
	Entity	Quantity	Exercise Price			Expiration Date
	Common Stock Held
	Very Hungry LLC	891,112	N/A			N/A
	Scott Reiman Trust	199,086	N/A			N/A
	Total Common Stock	1,090,198
	Warrants
	Very Hungry LLC (1)	739,337	$	6		2014
	Very Hungry LLC	96,833	$	15		2017
	Very Hungry LLC (2)	1,095,314	$	4.05		2018
	Scott Reiman Trust (1)	177,331	$	6		2014
	Scott Reiman Trust	37,874	$	15		2017
	Scott Reiman Trust (2)	262,713	$	4.05		2018
	Total Warrants	2,409,402
	Options
	Conway Schatz	2,800	$	130		2014
	(1)   Series B Warrants entitling the holder to purchase for $6.00 per unit one share of our common stock and one Series A Warrant to purchase an additional share of our common stock for $6.00 per share.  If exercised, each Series A Warrant would have full ratchet anti-dilution protection.
	(2)   Warrants have full ratchet anti-dilution protection.

Equity_Based_Compensation_Tabl

Equity Based Compensation (Tables)	6 Months Ended									12 Months Ended
	Sep. 30, 2013									Mar. 31, 2013
Equity Based Compensation	'									'
Schedule of options outstanding	'									'
	As of September 30, 2013, we had the following options outstanding:
	Exercise Price ($)	Outstanding Options		Vested Options		Expiration
	130	87,800		74,467		2022
	130	10,000		10,000		2023
	144	6,000		3,000		2022
	212.5	60,300		60,300		2021
		164,100		147,767
Schedule of assumptions used in estimating the fair value of awards granted	'									'
	Other assumptions used in estimating the fair value of awards granted through September 30, 2013 included the following:
	Remaining Term	8.17 to 9.51 years
	Volatility*	113.4% to 181.5%	*
	Risk-Free Rate	0.04% to 2.43%
	Dividend Yield	—
	*        The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.
Summary of stock option activity under the Plans	'									'
	Stock Options	Shares		Weighted-			Aggregate		Weighted-	Stock Options	Shares (000)		Weighted-		Aggregate		Weighted-
				Average			Intrinsic		Average				Average		Intrinsic		Average
				Exercise			Value ($000)		Remaining				Exercise		Value ($000)		Remaining
				Price					Term (Years)				Price				Term (Years)
	Outstanding at March 31, 2013	186,160		$	160.71		$	—	9,02	Outstanding at March 31, 2012	68		$	212.5	$	19,636	7.69
	Granted	2,000		15			—		2.1	Granted	127		130.66		—		9.01
	Exercised	—		—			—		—	Exercised	—		—		—		—
	Forfeited or expired	24,060		147.87			—		—	Forfeited or expired	(9	)	130		—		—
	Outstanding at September 30, 2013	164,100		$	160.83		$	—	8.55	Outstanding at March 31, 2013	186		160.71		—		9.02
	Vested at September 30, 2013	147,767		$	163.95		$	—	8.48	Vested at March 31, 2013	132		171.67		—		8.87
Summary of status of the non-vested stock options	'									'
	Non-vested Stock Options	Shares		Weighted						Non-vested Stock Options	Shares (000)		Weighted Average
				Average									Grant Date
				Grant Date									Fair Value
				Fair Value						Non-vested at March 31, 2012	20		$	123.48
	Non-vested at March 31, 2013	53,883		$	99.63					Granted	127		95.24
	Granted	2,000		2.1						Vested	(84	)	96.24
	Vested	(25,550	)	85.8						Forfeited	(9	)	123.1
	Forfeited	(14,000	)	130.59						Non-vested at March 31, 2013	54		99.63
	Non-vested at September 30, 2013	16,333		$	82.78

Warrants_Tables

Warrants (Tables)	6 Months Ended				12 Months Ended
	Sep. 30, 2013				Mar. 31, 2013
Warrants	'				'
Schedule of warrants outstanding	'				'
	As of September 30, 2013, we had the following warrants outstanding:				Secured Convertible Notes	Merkin Note			COR Note			Hexagon Note			Avalon Note			Second
						$2.0 million			$0.5 million			$2.5 million			$1.5 million			Hexagon Note
	Outstanding Warrants	Exercise Price ($)	Expiration	Notes		Face Value			Face Value			Face Value			Face Value			$1.5 million
	600	3.15 –4.04	2018															Face Value
	1,787,171	4.05	2018	Contain full ratchet anti-dilution protection to $3.50 per share		(thousands)			(thousands)			(thousands)			(thousands)			(thousands)
	307,424	6.00 – 17.00	2017, 2018		Proceeds	$	(2,000	)	$	(500	)	$	(2,500	)	$	(1,500	)	$	(1,500	)
	159,468	62.50 – 251.00	2014 - 2018		Compound embedded derivative	10,068			333			460			708			432
	2,254,663				Warrant derivative liability	—			—			3,954			5,147			2,135
					Day-one derivative loss	(8,068		)	—			(1,914		)	(4,355		)	(1,067		)
					Carrying value	$	—		$	(167	)	$	—		$	—		$	—
Warrants Issued for Services	'				'
Warrants	'				'
Schedule of assumptions used in estimating the fair value of awards granted	'				'
	Assumptions used in estimating the fair value of service warrants granted through September 30, 2013 included the following:
	Expected Term	0.25 to 4.8 years
	Volatility*	121.5% to 176.7%
	Risk-Free Rate	0.02% to 1.30%
	Dividend Yield	—
	*The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.
Investor Warrants	'				'
Warrants	'				'
Schedule of assumptions used in estimating the fair value of awards granted	'				'
	Assumptions used in estimating the fair value of investor warrants granted through September 30, 2013 included the following:
	Expected Term	0.09 to 5.7 years
	Volatility*	123.6% to 174.9%
	Risk-Free Rate	0.02% to 1.60%
	Dividend Yield	—
	*The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.

Loss_per_Share_Tables

Loss per Share (Tables)	6 Months Ended																12 Months Ended
	Sep. 30, 2013																Mar. 31, 2013
Loss per Share	'																'
Computation of basic and fully diluted weighted average shares outstanding and loss per share of common stock	'																'
	The following sets forth the computation of basic and fully diluted weighted average shares outstanding and loss per share of common stock for the periods indicated (unaudited, in thousands except for per share amounts):
																		Year Ended			Year Ended			Cumulative from
		Three Months			Three Months			Six Months			Six Months			Cumulative from				March 31,			March 31,			August 5, 2010
		Ended September			Ended September			Ended September			Ended September			August 5, 2010				2013			2012			(Inception)
		30, 2013			30, 2012			30, 2013			30, 2012			(Inception)										through March
														through										31, 2013
														September				(thousands, except per share amounts)
														30, 2013			Net loss attributable to Prospect Global Resources Inc.	$	(79,854	)	$	(63,566	)	$	(160,254	)
		(unaudited)			(unaudited)			(unaudited)			(unaudited)			(unaudited)			Weighted average number of common shares outstanding — basic	1,155			560			716
	Numerator																Dilution effect of restricted stock and warrants	—			—			—
	Net loss attributable to Prospect Global Resources Inc.	$	(18,361	)	$	(22,107	)	$	(17,344	)	$	(28,678	)	$	(177,598	)	Weighted average number of common shares outstanding — fully diluted	1,155			560			716
	Undeclared Preferred Stock Dividends	(160		)	—			(160		)	—			(160		)	Loss per share of common stock:
	Net loss applicable to common shares for basic and diluted earnings per share	$	(18,521	)	$	(22,107	)	$	(17,504	)	$	(28,678	)	$	(177,758	)	Basic and fully diluted loss per share of common stock	$	(69.14	)	$	(113.51	)	$	(223.82	)
	Denominator
	Weighted average number of common shares outstanding — basic	2,737			1,094			2,124			943			1,169
	Dilution effect of restricted stock and warrants	—			—									—
	Weighted average number of common shares outstanding — fully diluted	2,737			1,094			2,124			943			1,169
	Basic and fully diluted loss per share of common stock	$	(6.77	)	$	(20.21	)	$	(8.24	)	$	(30.41	)	$	(152.06	)

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	6 Months Ended
	Sep. 30, 2013
Commitments and Contingencies	'
Schedule of major contractual obligations	'
	(amounts in thousands)	Less than 1-year		1-2 years		Thereafter	Total
	Debt obligations*	2,328	*	166,805	*	—	169,133	*
	Land and lease payment**	363		609		729	1,701
	*Amounts include estimates of future interest and tax compensation to be incurred between now and the debt’s maturity.
	**Amounts may change in the future as mineral leases are converted to mining leases.

Fair_Value_Measurement_Tables

Fair Value Measurement (Tables)	6 Months Ended																		12 Months Ended
	Sep. 30, 2013																		Mar. 31, 2013
Fair Value Measurement	'																		'
Schedule of information about financial instruments recognized at fair value	'																		'
		September 30, 2013										March 31, 2013
	(in thousands)	Level 1			Level 2			Level 3		Total		Level 1		Level 2		Level 3		Total
	Liabilities:
	Tax compensation*	—			17,629			—		17,629		—		6,226		—		6,226
	Buffalo embedded derivative	—			—			650		650		—		—		—		—
	Derivative warrant liability*	—			—			17,055		17,055		—		—		—		—
	Total liabilities	$	—		$	17,629		$	17,705	$	35,334	$	—	$	6,226	$	—	6,226
	* Measured on a recurring basis (at least annually).
Schedule of estimated fair values of the Company's debt (all non-recurring)	'																		'
		Carrying Value			Fair Value
		(In thousands)
	September 30, 2013 (Level 3)	$	127,532		$	94,203
	March 31, 2013 (Level 1)	$	122,032		$	112,110
Summary of qualitative information related to the unobservable inputs used in the calculation of the Company's Level 3 financial liabilities	'																		'
	The following table sets forth a summary of the qualitative information related to the unobservable inputs used in the calculation of the Company’s Level 3 financial liabilities for the six months ended September 30, 2013:
	Description	Valuation Technique		Unobservable Inputs
	Grandhaven option	Discounted cash flow		Discount rate, future potash prices and mine life
	Derivative warrant liability	Binomial-Lattice valuation model		Underlying price, exercise price, term, volatility and risk free interest rate
	Indebtedness	Discounted cash flow		Discount rate
	Buffalo preferred stock put option	Discounted cash flow		Discount rate, preferred stock redemption scenarios, future potash prices and mine life
Schedule of a summary of changes in the fair value of the Company's Level 3 financial liabilities	'																		'
		Derivative Warrant			Very Hungry			Buffalo Embedded												Derivative Financial Information
		Liability			Embedded			Derivative												2013		2012
					Derivative															(thousands)		(thousands)
	Balance at March 31, 2013	$	—		$	—		$	—										Beginning balance as of period ended March 31	$	—	$	(17,288	)
	Mark-to-market adjustment	17,055			—			—											Total gains or losses (realized or unrealized):
	Extinguishment — debt (net of amortization)	—			—			—											Included in earnings	—		(20,956		)
	New instrument — initial valuation	—			2,900			650											Warrant issuances	—		(12,396		)
	Extinguishment — embedded derivative	—			(2,900		)	—											Warrant reclassification to equity	—		20,228
	Balance at September 30, 2013	$	17,055		$	—		$	650										Debenture issuances	—		(12,001		)
																			Debenture conversions	—		42,413
																			Ending balance as of March 31	—		—

Restatement_Tables

Restatement (Tables)	6 Months Ended							12 Months Ended
	Sep. 30, 2013							Mar. 31, 2013
Restatement	'							'
Schedule of details of restatements	'							'
	Consolidated Balance Sheet							Consolidated Balance Sheet
		September 30, 2013							March 31, 2013
		As Reported		Adjustment		As Restated			As Reported		Adjustment		As Restated
		($000’s)		($000’s)		($000’s)			($000’s)		($000’s)		($000’s)
	ASSETS							ASSETS
	Mineral properties	45,140		(31,450	)	13,690		Mineral properties	39,994		(26,304	)	13,690
	Deferred fees	7,313		(7,313	)	—		Deferred fees	7,751		(7,751	)	—
	Total noncurrent assets	53,647		(38,763	)	14,884		Total noncurrent assets	48,842		(34,055	)	14,787
	Total assets	56,860		(38,763	)	18,097		Total assets	51,062		(34,055	)	17,007
	LIABILITIES AND EQUITY							SHAREHOLDER’S DEFICIT
	Additional paid-in capital	44,119		(6,789	)	37,330		Common stock	73		(72	)	1
	Losses accumulated in the exploration stage	(145,624	)	(31,974	)	(177,598	)	Additional paid-in capital	35,641		(5,306	)	30,335
	Total shareholder’s deficit	(101,501	)	(38,763	)	(140,264	)	Losses accumulated in exploration stage	(131,577	)	(28,677	)	(160,254	)
	Total liabilities, redeemable preferred stock and shareholders’ deficit	56,860		(38,763	)	18,097		Total shareholder’s deficit - Prospect Global Resources, Inc.	(95,863	)	(34,055	)	(129,918	)
								Total liabilities and shareholder’s deficit	51,062		(34,055	)	17,007
	Consolidated Statement of Operations
								Consolidated Statement of Operations
		Three months ended
		September 30, 2013							Twelve months ended
		As Reported		Adjustment		As Restated			March 31, 2013
		($000’s)		($000’s)		($000’s)			As Reported		Adjustment		As Restated
	Exploration	—		2,859		2,859			($000’s)		($000’s)		($000’s)
	General and administrative	1,902		359		2,261		Exploration	—		18,575		18,575
	Off-take arrangement fee	—		(438	)	(438	)	General and administrative	42,737		5,721		48,458
	Total expenses	3,652		2,780		6,432		Off-take arrangement fee	—		7,751		7,751
	Loss from operations	(3,652	)	(2,780	)	(6,432	)	Total expenses	42,737		32,047		74,784
	Net loss	(15,581	)	(2,780	)	(18,361	)	Loss from operations	(42,737	)	(32,047	)	(74,784	)
	Net loss attributable to non-controlling interest	—		—		—		Net loss	(51,878	)	(32,047	)	(83,925	)
	Net loss attributable to Prospect Global Resources, Inc.	(15,581	)	(2,780	)	(18,361	)	Net loss attributable to non-controlling interest	12		4,059		4,071
	Loss per share - basic and diluted	(5.75	)	(1.02	)	(6.77	)	Net loss attributable to Prospect Global Resources, Inc.	(51,866	)	(27,988	)	(79,854	)
								Loss per share - basic and diluted	(44.91	)	(24.23	)	(69.14	)
	Consolidated Statement of Operations
								Consolidated Statement of Operations
		Six Months ended
		September 30, 2013							Inception through
		As Reported		Adjustment		As Restated			March 31, 2013
		($000’s)		($000’s)		($000’s)			As Reported		Adjustment		As Restated
	Exploration	—		4,071		4,071			($000’s)		($000’s)		($000’s)
	General and administrative	4,691		(336	)	4,355		Exploration	5,600		19,623		25,223
	Off-take arrangement fee	—		(438	)	(438	)	General and Administrative	61,102		6,049		67,151
	Total expenses	9,742		3,297		13,039		Off-take arrangement fee	—		7,751		7,751
	Loss from operations	(9,742	)	(3,297	)	(13,039	)	Total expenses	66,702		33,423		100,125
	Net loss	(14,047	)	(3,297	)	(17,344	)	Loss from operations	(66,702	)	(33,423	)	(100,125	)
	Net loss attributable to Prospect Global Resources, Inc.	(14,047	)	(3,297	)	(17,344	)	Net loss	(134,668	)	(33,423	)	(168,091	)
	Loss per share - basic and diluted	(6.69	)	(1.55	)	(8.24	)	Net loss attributable to non-controlling interest	3,090		4,747		7,837
								Net loss attributable to Prospect Global Resources, Inc.	(131,578	)	(28,676	)	(160,254	)
	Consolidated Statement of Operations							Loss per share - basic and diluted	(183.77	)	(40.05	)	(223.82	)
		Inception through						Consolidated Statement of Cash Flows
		September 30, 2013
		As Reported		Adjustment		As Restated			Twelve months ended
		($000’s)		($000’s)		($000’s)			March 31, 2013
	Exploration	5,600		23,694		29,294			As Reported		Adjustment		As Restated
	General and administrative	59,826		5,714		65,540			($000’s)		($000’s)		($000’s)
	Off-take arrangement fee	—		7,313		7,313		Operating activities:
	Total expenses	76,443		36,721		113,164		Net loss	(51,878	)	(32,047	)	(83,925	)
	Loss from operations	(76,443	)	(36,721	)	(113,164	)	Services paid for with securities	776		3,877		4,653
	Net loss	(148,714	)	(36,721	)	(185,435	)	Stock based compensation	13,794		2,445		16,239
	Net loss attributable to non-controlling interest	3,090		4,747		7,837		Deferred fees	(2,287	)	2,287		—
	Net loss attributable to Prospect Global Resources, Inc.	(145,624	)	(31,974	)	(177,598	)	Account payable	497		1,682		2,179
	Loss per share - basic and diluted	(124.71	)	(27.35	)	(152.06	)	Accrued liabilities	(915	)	4,578		3,663
								Net cash used in operating activities	(17,645	)	(17,178	)	(34,823	)
	Consolidated Statement of Cash Flows
								Investing activities:
	Six months ended						Mineral properties	(18,777	)	17,178		(1,599	)
	September 30, 2013						Net cash used in investing activities	(19,796	)	17,178		(2,618	)
	As Reported		Adjustment		As Restated
	($000’s)		($000’s)		($000’s)		Consolidated Statement of Cash Flows
Operating activities:
Net loss	(14,047	)	(3,297	)	(17,344	)		Inception through
Stock based compensation	1,103		(928	)	175			March 31, 2013
Account payable and accrued liabilities	223		(2,187	)	(1,964	)		As Reported		Adjustment		As Restated
Net cash used in operating activities	(3,810	)	(6,412	)	(10,222	)		($000’s)		($000’s)		($000’s)
							Operating activities:
Investing activities:							Net loss	(134,668	)	(33,423	)	(168,091	)
Mineral properties	(6,412	)	6,412		—		Services paid for with securities	3,156		3,877		7,033
Net cash used in investing activities	(6,807	)	6,412		(395	)	Stock based compensation	23,512		2,445		25,957
							Deferred fees	(2,288	)	2,288		—
Consolidated Statement of Cash Flows							Accounts payable	1,169		1,681		2,850
							Accrued liabilities	(531	)	5,049		4,518
	Inception through						Net cash used in operating activities	(29,360	)	(18,083	)	(47,443	)
	September 30, 2013
	As Reported		Adjustment		As Restated		Investing activities:
	($000’s)		($000’s)		($000’s)		Mineral properties	(20,773	)	18,083		(2,690	)
Operating activities:							Net cash used in investing activities	(21,879	)	18,083		(3,796	)
Net loss	(148,715	)	(36,720	)	(185,435	)
Services paid for with securities	3,695		3,877		7,572		Consolidated Balance Sheet
Stock based compensation	18,648		1,517		20,165
Deferred fees	(2,288	)	2,288		—			March 31, 2012
Account payable and accrued liabilities	861		4,543		5,404			As Reported		Adjustment		As Restated
Net cash used in operating activities	(33,170	)	(24,495	)	(57,665	)		($000’s)		($000’s)		($000’s)
							ASSETS
Investing activities:							Mineral properties	13,468		(1,377	)	12,091
Mineral properties	(27,185	)	24,495		(2,690	)	Total noncurrent assets	13,630		(1,377	)	12,253
Net cash used in investing activities	(28,686	)	24,495		(4,191	)	Total assets	25,784		(1,377	)	24,407
							SHAREHOLDER’S EQUITY
Consolidated Statement of Operations							Common Stock	40		(40	)	—
							Additional paid-in capital	91,957		40		91,997
	Three months						Losses accumulated in exploration stage	(79,711	)	(688	)	(80,400	)
	ended September						Total shareholder’s equity - Prospect Global Resources, Inc.	12,285		(688	)	11,597
	30, 2012						Non-controlling interest	7,923		(689	)	7,234
	As Reported		Adjustment		As Restated		Total shareholder’s equity	20,208		(1,377	)	18,831
	($000’s)		($000’s)		($000’s)		Total liabilities and shareholder’s deficit	25,784		(1,377	)	24,407
Exploration	—		5,802		5,802
General and administrative (1)	12,080		3,167		15,247		Consolidated Statement of Operations
Total expenses	12,080		8,969		21,049
Loss from operations	(12,080	)	(8,969	)	(21,049	)		Fiscal Year ending
Net loss	(13,951	)	(8,969	)	(22,920	)		March 31, 2012
Net loss attributable to non-controlling interest	6		807		813			As Reported		Adjustment		As Restated
Net loss attributable to Prospect Global Resources, Inc.	(13,945	)	(8,162	)	(22,107	)		($000’s)		($000’s)		($000’s)
Loss per share - basic and diluted	(12.75	)	(7.46	)	(20.21	)	Exploration	4,954		1,048		6,002
							General and administrative	16,877		329		17,206
(1)   Includes warrant expense of $5,619.							Total expenses	21,831		1,377		23,208
							Loss from operations	(21,831	)	(1,377	)	(23,208	)
Consolidated Statement of Operations							Net loss	(65,580	)	(1,377	)	(66,957	)
							Net loss attributable to non-controlling interest	2,702		689		3,391
	Six Months ended						Net loss attributable to Prospect Global Resources, Inc.	(62,878	)	(688	)	(63,566	)
	September 30,						Loss per share - basic and diluted	(112.28	)	(1.23	)	(113.51	)
	2012
	As Reported		Adjustment		As Restated		Consolidated Statement of Operations
	($000’s)		($000’s)		($000’s)
Exploration	—		11,370		11,370			Inception through
General and administrative (1)	15,408		4,099		19,507			March 31, 2012
Total expenses	15,408		15,469		30,877			As Reported		Adjustment		As Restated
Loss from operations	(15,408	)	(15,469	)	(30,877	)		($000’s)		($000’s)		($000’s)
Net loss	(17,279	)	(15,469	)	(32,748	)	Exploration	5,600		1,048		6,648
Net loss attributable to non-controlling interest	13		4,057		4,070		General and administrative	18,364		329		18,693
Net loss attributable to Prospect Global Resources, Inc.	(17,266	)	(11,412	)	(28,678	)	Total expenses	23,964		1,377		25,341
Loss per share - basic and diluted	(18.31	)	(12.10	)	(30.41	)	Loss from operations	(23,964	)	(1,377	)	(25,341	)
							Net loss	(82,789	)	(1,377	)	(84,166	)
(1)   Includes warrant expense of $5,619.							Net loss attributable to non-controlling interest	3,078		689		3,767
							Net loss attributable to Prospect Global Resources, Inc.	(79,711	)	(688	)	(80,399	)
Consolidated Statement of Cash Flows							Loss per share - basic and diluted	(172.91	)	(1.49	)	(174.40	)
	Six months ended						Consolidated Statement of Cash Flows
	September 30,
	2012							Fiscal Year ended
	As Reported		Adjustment		As Restated			March 31, 2012
	($000’s)		($000’s)		($000’s)			As Reported		Adjustment		As Restated
Operating activities								($000’s)		($000’s)		($000’s)
Net loss	(17,279	)	(15,469	)	(32,748	)	Operating Activities:
Stock based compensation and warrant expense	8,228		2,454		10,682		Net loss	(65,580	)	(1,377	)	(66,957	)
Account payable	(249	)	2,348		2,099		Accrued liabilities	299		471		770
Accrued liabilities	980		1,680		2,660		Net cash used in operating activities	(10,443	)	(906	)	(11,349	)
Net cash used in operating activities	(5,719	)	(8,987	)	(14,706	)
							Investing Activities:
Investing activities							Mineral Properties	(1,949	)	906		(1,043	)
Mineral properties	(9,085	)	8,987		(98	)	Net cash used in investing activities	(2,030	)	906		(1,124	)
Net cash used in investing activities	(9,481	)	8,987		(494	)
							Consolidated Statement of Cash Flows
								Inception through
								March 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(82,789	)	(1,377	)	(84,166	)
							Accrued liabilities	386		471		857
							Net cash used in operating activities	(11,712	)	(906	)	(12,618	)
							Investing activities:
							Mineral properties	(1,997	)	906		(1,091	)
							Net cash used in investing activities	(2,086	)	906		(1,180	)
							Consolidated Balance Sheet
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	20,067		(7,877	)	12,190
							Total noncurrent assets	20,371		(7,877	)	12,494
							Total assets	22,071		(7,877	)	14,194
							SHAREHOLDER’S EQUITY
							Common stock	39		(39	)	—
							Additional paid-in capital	86,719		39		86,758
							Losses accumulated in exploration stage	(83,032	)	(3,939	)	(86,971	)
							Total shareholder’s equity - Prospect Global Resources, Inc.	4,727		(3,938	)	789
							Non-controlling interest	7,915		(3,939	)	3,976
							Total shareholder’s equity	12,642		(7,877	)	4,765
							Total liabilities and shareholder’s equity	22,071		(7,877	)	14,194
							Consolidated Statement of Operations
								Three months ended
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,568		5,568
							General and administrative	3,328		932		4,260
							Total expenses	3,328		6,500		9,828
							Loss from operations	(3,328	)	(6,500	)	(9,828	)
							Net loss	(3,328	)	(6,500	)	(9,828	)
							Net loss attributable to non-controlling interest	7		3,250		3,257
							Net loss attributable to Prospect Global Resources, Inc.	(3,321	)	(3,250	)	(6,571	)
							Loss per share - basic and diluted	(4.20	)	(4.12	)	(8.32	)
							Consolidated Statement of Operations
								Inception through June
								30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		6,616		12,216
							General and administrative	21,692		1,261		22,953
							Total expenses	27,292		7,877		35,169
							Loss from operations	(27,292	)	(7,877	)	(35,169	)
							Net loss	(86,117	)	(7,877	)	(93,994	)
							Net loss attributable to non-controlling interest	3,085		3,939		7,024
							Net loss attributable to Prospect Global Resources, Inc.	(83,032	)	(3,938	)	(86,970	)
							Loss per share - basic and diluted	(164.42	)	(7.80	)	(172.22	)
							Consolidated Statement of Cash Flows
								Three months ended
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(3,328	)	(6,500	)	(9,828	)
							Accounts payable	434		1,722		2,156
							Accrued liabilities	258		1,088		1,346
							Net cash used in operating activities	(2,079	)	(3,690	)	(5,769	)
							Investing activities:
							Mineral properties	(3,788	)	3,690		(98	)
							Net cash used in investing activities	(8,937	)	3,690		(5,247	)
							Consolidated Statement of Cash Flows
								Inception through June
								30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(86,117	)	(7,877	)	(93,994	)
							Accounts payable	1,106		1,723		2,829
							Accrued liabilities	644		1,559		2,203
							Net cash used in operating activities	(13,292	)	(4,595	)	(17,887	)
							Investing activities:
							Mineral properties	(5,784	)	4,595		(1,189	)
							Net cash used in investing activities	(11,523	)	4,595		(6,928	)
							Consolidated Balance Sheet
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	29,036		(16,846	)	12,190
							Total noncurrent assets	29,638		(16,846	)	12,792
							Total assets	41,604		(16,846	)	24,758
							SHAREHOLDER’S DEFICIT
							Common stock	55		(55	)	—
							Additional paid-in capital	1,275		(4,691	)	(3,416	)
							Losses accumulated in exploration stage	(96,977	)	(12,100	)	(109,077	)
							Total shareholder’s (deficit) - Prospect Global Resources, Inc.	(95,646	)	(16,846	)	(112,492	)
							Total shareholder’s (deficit)	(95,646	)	(16,846	)	(112,492	)
							Total liabilities and shareholder’s deficit (deficit)	41,604		(16,846	)	24,758
							Consolidated Statement of Operations
								Three months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,802		5,802
							General and administrative	12,080		3,167		15,247
							Total expenses	12,080		8,969		21,049
							Loss from operations	(12,080	)	(8,969	)	(21,049	)
							Net loss	(13,951	)	(8,969	)	(22,920	)
							Net loss attributable to non-controlling interest	6		807		813
							Net loss attributable to Prospect Global Resources, Inc.	(13,945	)	(8,162	)	(22,107	)
							Loss per share - basic and diluted	(12.75	)	(7.46	)	(20.21	)
							Consolidated Statement of Operations
								Six Months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		11,370		11,370
							General and administrative	15,408		4,099		19,507
							Total expenses	15,408		15,469		30,877
							Loss from operations	(15,408	)	(15,469	)	(30,877	)
							Net loss	(17,279	)	(15,469	)	(32,748	)
							Net loss attributable to non-controlling interest	13		4,057		4,070
							Net loss attributable to Prospect Global Resources, Inc.	(17,266	)	(11,412	)	(28,678	)
							Loss per share - basic and diluted	(18.31	)	(12.10	)	(30.41	)
							Consolidated Statement of Operations
								Inception through
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		12,418		18,018
							General and administrative	33,771		4,428		38,199
							Total expenses	39,371		16,846		56,217
							Loss from operations	(39,371	)	(16,846	)	(56,217	)
							Net loss	(100,068	)	(16,846	)	(116,914	)
							Net loss attributable to non-controlling interest	3,091		4,746		7,837
							Net loss attributable to Prospect Global Resources, Inc.	(96,977	)	(12,100	)	(109,077	)
							Loss per share - basic and diluted	(168.66	)	(21.04	)	(189.70	)
							Consolidated Statement of Cash Flows
								Six months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities
							Net loss	(17,279	)	(15,469	)	(32,748	)
							Stock based compensation and warrant expense	8,228		2,454		10,682
							Account payable	(249	)	2,348		2,099
							Accrued liabilities	980		1,680		2,660
							Net cash used in operating activities	(5,719	)	(8,987	)	(14,706	)
							Investing activities
							Mineral properties	(9,085	)	8,987		(98	)
							Net cash used in investing activities	(9,481	)	8,987		(494	)
							Consolidated Statement of Cash Flows
								Inception through
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating Activities:
							Net loss	(100,068	)	(16,846	)	(116,914	)
							Stock based compensation	17,946		2,454		20,400
							Account payable	423		2,348		2,771
							Accrued liabilities	1,365		2,151		3,516
							Net cash used in operating activities	(17,430	)	(9,893	)	(27,323	)
							Investing Activities:
							Mineral Properties	(11,082	)	9,893		(1,189	)
							Net cash used in investing activities	(11,567	)	9,893		(1,674	)
							Consolidated Balance Sheet
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	35,991		(23,801	)	12,190
							Deferred fees	7,751		(7,751	)	—
							Total noncurrent assets	44,517		(31,554	)	12,963
							Total assets	55,304		(31,554	)	23,750
							SHAREHOLDER’S DEFICIT
							Common stock	73		(72	)	1
							Additional paid-in capital	34,265		(5,046	)	29,219
							Losses accumulated in exploration stage	(116,727	)	(26,436	)	(143,163	)
							Total shareholder’s deficit - Prospect Global Resources, Inc.	(82,390	)	(31,554	)	(113,944	)
							Non-controlling interest	—		—		—
							Total shareholder’s deficit	(82,390	)	(31,554	)	(113,944	)
							Total liabilities and shareholder’s deficit	55,304		(31,554	)	23,750
							Consolidated Statement of Operations
								Three months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,646		5,646
							General and administrative	15,110		937		16,047
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	15,110		14,334		29,444
							Loss from operations	(15,110	)	(14,334	)	(29,444	)
							Net loss	(19,751	)	(14,334	)	(34,085	)
							Net loss attributable to non-controlling interest	—		—		—
							Net loss attributable to Prospect Global Resources, Inc.	(19,751	)	(14,334	)	(34,085	)
							Loss per share - basic and diluted	(15.36	)	(11.14	)	(26.50	)
							Consolidated Statement of Operations
								Nine Months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		17,016		17,016
							General and administrative	30,518		5,036		35,554
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	30,518		29.803,		60,321
							Loss from operations	(30,518	)	(29,803	)	(60,321	)
							Net loss	(37,030	)	(29,803	)	(66,833	)
							Net loss attributable to non-controlling interest	12		4,057		4,069
							Net loss attributable to Prospect Global Resources, Inc.	(37,018	)	(25,746	)	(62,764	)
							Loss per share - basic and diluted	(34.99	)	(24.33	)	(59.32	)
							Consolidated Statement of Operations
								Inception through
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		18,064		23,664
							General and administrative	48,881		5,365		54,246
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	54,481		31,180		85,661
							Loss from operations	(54,481	)	(31,180	)	(85,661	)
							Net loss	(119,819	)	(31,180	)	(150,999	)
							Net loss attributable to non-controlling interest	3,091		4,746		7,837
							Net loss attributable to Prospect Global Resources, Inc.	(116,728	)	(23,434	)	(140,162	)
							Loss per share - basic and diluted	(182.10	)	(36.56	)	(218.66	)
							Consolidated Statement of Cash Flows
								Nine months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(37,030	)	(29,803	)	(66,833	)
							Services paid for with securities	672		3,875		4,547
							Stock based compensation	12,649		2,578		15,227
							Deferred fees	(1,938	)	1,938		—
							Accounts payable	(1,773	)	3,191		1,418
							Accrued liabilities	1,781		2,780		4,561
							Net cash used in operating activities	(12,650	)	(15,441	)	(28,091	)
							Investing activities:
							Mineral properties	(15,539	)	15,441		(98	)
							Net cash used in investing activities	(16,181	)	15,441		(740	)
							Consolidated Statement of Cash Flows
								Inception through
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities
							Net loss	(119,819	)	(31,180	)	(150,999	)
							Services paid for with securities	3,052		3,876		6,928
							Stock based compensation	22,367		2,578		24,945
							Deferred fees	(1,938	)	1,938		—
							Accounts payable	(1,101	)	3,191		2,090
							Accrued liabilities	2,165		3,252		5,417
							Net cash used in operating activities	(24,363	)	(16,345	)	(40,708	)
							Investing activities
							Mineral properties	(17,535	)	16,345		(1,190	)
							Net cash used in investing activities	(18,266	)	16,345		(1,921	)

Organization_and_Business_Oper1

Organization and Business Operations (Details) (USD $)	6 Months Ended		1 Months Ended	0 Months Ended	11 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Aug. 01, 2012	Jul. 31, 2011	Aug. 01, 2012	Nov. 30, 2011
	item	AWP	AWP	AWP	AWP
			Sharing agreement	Karlsson Group [Member]	Karlsson Group [Member]
			acre		acre
			item
Organization and Business Operations	'	'	'	'	'
Amount of cash contributions made	'	'	'	'	$11
Number of private sections	101	'	'	'	8
Number of Arizona state sections on which permits are held	38	'	'	'	42
Area transferred in exchange for equity interest (in acres)	'	'	'	'	31,000
Ownership percentage	'	50.00%	'	'	50.00%
Number of private mineral estate sections covered	'	'	101	'	'
Area of private mineral leases related to private mineral estates covered (in acres)	'	'	62,000	'	'
Ownership percentage acquired from Karlsson Group	'	'	'	50.00%	'

Liquidity_Capital_Requirements1

Liquidity, Capital Requirements and Debt Restructurings (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013	Nov. 13, 2013	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Feb. 10, 2014	Nov. 15, 2013	Sep. 30, 2013
			Subsequent Events	Apollo debt	Apollo debt	Karlsson Group	Karlsson Group	Karlsson Group	Karlsson Group
							Subsequent Events	Subsequent Events	Apollo debt
Liquidity, capital requirements and debt restructurings	'	'	'	'	'	'	'	'	'
Cash available for general corporate purposes	'	'	$600,000	'	'	'	'	'	'
Amount payable for tax compensation matters	'	'	'	'	'	'	1,200,000	1,200,000	'
Note payable including principal, accrued interest and compensation for tax matters	'	'	'	'	'	145,400,000	'	'	'
Indebtedness	'	128,300,000	'	'	'	'	'	'	7,200,000
Amount of debt payable on default	$141,851,000	$128,258,000	'	$6,750,000	$6,750,000	$152,600,000	'	'	'

Summary_of_Significant_Account2

Summary of Significant Accounting Principles (Details) (USD $)

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

20 Months Ended

23 Months Ended

26 Months Ended

29 Months Ended

32 Months Ended

38 Months Ended

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2012

Jun. 30, 2012

Sep. 30, 2012

Dec. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Summary of Significant Accounting Principles

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

($18,361,000)

($34,085,000)

($22,107,000)

($6,571,000)

($17,344,000)

($28,678,000)

($62,764,000)

($79,854,000)

($63,566,000)

($80,399,000)

($86,970,000)

($109,077,000)

($140,162,000)

($160,254,000)

($177,598,000)

Working capital deficit

$23,700,000

'

'

'

$23,700,000

'

'

($144,700,000)

'

'

'

'

'

($144,700,000)

$23,700,000

Restricted_Cash_Details

Restricted Cash (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013
Restricted cash	'
Percentage of proceeds from future capital raised required to be placed in escrow	0.5
Escrow deposit required	$9.40
Karlsson Group	'
Restricted cash	'
Percentage of proceeds from future capital raised required to be placed in escrow	0.5
Escrow deposit required	9.4
Amount remaining in escrow	$0.40

Other_Current_Assets_Details

Other Current Assets (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013	Mar. 31, 2012
In Thousands, unless otherwise specified
Other Current Assets	'	'	'
Prepaid insurance & rent	$281	$276	$223
Land purchase option	'	500	'
Other	40	389	605
Total other current assets	$321	$1,165	$828

Offtake_arrangement_fee_Detail

Off-take arrangement fee (Details) (Off-take agreement, Sichuan, USD $)	1 Months Ended
	Jul. 31, 2013	Sep. 30, 2013
Off-take agreement | Sichuan	'	'
Off-take arrangement fee	'	'
One-time success fee payable to third party	'	$7,800,000
Reduction in third party fee payable	$400,000	'

Accounts_Payable_and_Accrued_L2

Accounts Payable and Accrued Liabilities (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2013	Mar. 31, 2012
Accounts Payable and Accrued Liabilities	'	'	'
Drilling/permitting	$140	$543	$471
Engineering	1,796	1,505	'
Private leaseholder obligations	1,500	'	'
Legal	112	664	280
Board of Directors' fees	125	'	'
Off-take arrangement fee	1,588	50	'
Accrued interest	7,229	'	'
Compensation and other	1,245	1,866	'
Total accounts payable and accrued liabilities	$14,607	$4,628	'

Debt_and_Tax_Compensation_on_N2

Debt and Tax Compensation on Note Payable (Details) (USD $)

6 Months Ended

38 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

6 Months Ended

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Aug. 01, 2012

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Feb. 10, 2014

Apr. 15, 2013

Aug. 01, 2012

30-May-12

Sep. 30, 2013

Mar. 31, 2013

Aug. 01, 2012

Mar. 07, 2013

Sep. 30, 2013

AWP

Apollo Notes

Apollo Notes

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Affiliates of Apollo Global Management, LLC

Affiliates of Apollo Global Management, LLC

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Apollo Notes

Apollo Notes

item

AWP

AWP

AWP

item

Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total debt

$141,851,000

$141,851,000

$128,258,000

'

$6,750,000

$6,750,000

$152,600,000

$117,472,000

$115,282,000

'

'

'

'

'

'

'

'

$7,200,000

Tax compensation

'

'

'

'

'

'

17,600,000

17,629,000

6,226,000

'

'

'

'

'

'

'

'

'

Less: Unamortized debt discount

26,329,000

26,329,000

'

'

'

'

'

-34,528,000

'

'

'

'

'

'

'

'

'

'

Less: current portion of debt and tax compensation

-1,164,000

-1,164,000

-128,258,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total long-term debt

114,358,000

114,358,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of debt discount

8,199,000

8,199,000

'

'

'

'

'

8,199,000

'

'

'

'

'

'

'

'

'

'

Accrued interest

10,730,000

10,730,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

Face value

'

'

'

'

'

'

'

'

'

'

'

125,000,000

125,000,000

'

'

'

'

'

Interest acquired (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

Interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

9.00%

9.00%

'

'

'

'

'

11.00%

Term of debt instrument from completion of Definitive Feasibility Study

'

'

'

'

'

'

'

'12 months

'

'

'

'

'

'

'

'

'

'12 months

Note payable including principal, accrued interest and compensation for tax matters

'

'

'

'

'

'

'

145,400,000

'

'

'

'

'

'

'

'

'

'

Note payable including principal, accrued interest and compensation for tax matters, current portion

'

'

'

'

'

'

'

1,200,000

'

'

'

'

'

'

'

'

'

'

Amount of additional principal payable if no principal payment made from September 30, 2013 to December 31, 2013

'

'

'

'

'

'

'

'

'

1,200,000

'

'

'

'

'

'

'

'

Minimum number of wells for which total depth is required to be completed before November 1, 2013

'

'

'

'

'

'

'

8

'

'

'

'

'

'

'

'

'

'

Principal payments payable expressed as a percentage of gross proceeds

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

10.00%

Period for mandatory pre-payment of debt

'

'

'

'

'

'

'

'5 days

'5 days

'

'

'

'

'

'

'

'

'

Minimum ownership percentage to avoid pre-payment

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

50.00%

50.00%

'

'

'

Percentage of proceeds from future capital raised required to be placed in escrow

0.5

'

'

'

'

'

0.5

'

'

'

'

'

'

'

'

'

'

'

Amount of capital raised that is subject to escrow deposit for funding of drilling and the Holbrook Project development under debt covenant

18,800,000

18,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Escrow deposit required

9,400,000

'

'

'

'

'

9,400,000

'

'

'

'

'

'

'

'

'

'

'

Percentage of capital raised to be used for payment of debt

20.00%

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

10.00%

Additional amount payable on failure of principal payment in remainder of fiscal year

'

'

'

'

'

'

1,200,000

'

'

'

'

'

'

'

'

'

'

'

Additional amount payable on failure of principal payment in next fiscal year

'

'

'

'

'

'

1,200,000

'

'

'

'

'

'

'

'

'

'

'

Number of promissory notes issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

Amount borrowed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$6,800,000

'

Redeemable_Preferred_Stock_Det

Redeemable Preferred Stock (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013	Aug. 14, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
			Redeemable preferred stock	Redeemable preferred stock	Redeemable preferred stock	Redeemable preferred stock
			t			Buffalo Management Llc [Member]
Redeemable preferred stock	'	'	'	'	'	'
Liquidation value outstanding	$15,000,000	'	'	'	'	$15,000,000
Dividend rate (as a percent)	'	'	'	'	'	8.00%
Dividends declared	'	'	'	$0	'	'
Period for dividend payment after a specified quantity of potash has first been shipped for delivery from Holbrook Project	'	'	'6 months	'	'	'
Minimum quantity of potash that has first been shipped for delivery from Holbrook Project (in tonnes)	'	'	50,000	'	'	'
Period for redemption by holder of redeemable preferred stock after a specified quantity of potash that has first been shipped for delivery from Holbrook Project	'	'	'3 years	'	'	'
Market capitalization cap percentage for liquidation preference	'	'	10.00%	'	10.00%	'

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)

6 Months Ended

38 Months Ended

0 Months Ended

1 Months Ended

1 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

32 Months Ended

38 Months Ended

0 Months Ended

6 Months Ended

1 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

1 Months Ended

6 Months Ended

12 Months Ended

32 Months Ended

38 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

1 Months Ended

0 Months Ended

6 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 03, 2013

Mar. 31, 2013

Mar. 31, 2012

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Nov. 01, 2013

Oct. 04, 2013

Oct. 02, 2013

Nov. 01, 2013

Sep. 30, 2013

Aug. 14, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Aug. 14, 2013

Sep. 30, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Aug. 01, 2012

Apr. 15, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Aug. 14, 2013

Aug. 14, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Nov. 13, 2013

31-May-13

Sep. 30, 2013

31-May-13

Jul. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Oct. 04, 2013

31-May-13

Nov. 22, 2011

Sep. 30, 2013

Mar. 31, 2013

Nov. 22, 2011

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Jul. 05, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Apr. 15, 2013

Sep. 30, 2013

Options

Options

Options

Options

Options

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Warrants having full ratchet anti-dilution protection rights to $3.50 per share

Warrants having full ratchet anti-dilution protection rights to $3.50 per share

Warrants having full ratchet anti-dilution protection rights to $3.50 per share with strike price $4.05

Series B Warrants

Warrants having full ratchet anti-dilution protection rights

Warrants having full ratchet anti-dilution protection rights

Conway Schatz

Preferred Stock

Quincy Prelude LLC [Member]

Quincy Prelude LLC [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Mr. Brownstein's father

Mr. Brownstein's father

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Grandhaven

Grandhaven

Grandhaven

Grandhaven

Grandhaven

Very Hungry LLC [Member]

Very Hungry LLC [Member]

Very Hungry LLC [Member]

Very Hungry LLC [Member]

Very Hungry LLC [Member]

Very Hungry LLC [Member]

Scott Reiman Trust

Scott Reiman Trust

Scott Reiman Trust

Scott Reiman Trust

Very Hungry and the Scott Reiman 1991 Trust

Very Hungry and the Scott Reiman 1991 Trust

Karlsson

Karlsson

Outstanding options expiring in 2022 with exercise price of $130

Outstanding options expiring in 2021 with exercise price of $212.50

warrant

warrant

warrant

warrant

Example

Warrants expiring in 2014

Common Stock

Common Stock

Extension Agreement

Extension Agreement

Warrants having full ratchet anti-dilution protection rights to $3.50 per share with strike price $4.05

Barry Munitz

Barry Munitz

Preferred Stock

Preferred Stock

Preferred Stock

Preferred Stock

Quincy Prelude LLC [Member]

Quincy Prelude LLC [Member]

Quincy Prelude LLC [Member]

Quincy Prelude LLC [Member]

Quincy Prelude LLC [Member]

Options

Subsequent Events

Subsequent Events

Conway Schatz

AWP

AWP

Warrants expiring in 2014

Warrants expiring in 2017

Warrants expiring in 2018

Series B Warrants

Common Stock

Warrants expiring in 2014

Warrants expiring in 2017

Warrants expiring in 2018

Preferred Stock

Extension Agreement

Extension Agreement

Minimum

Minimum

warrant

Warrants expiring in 2018

Warrants expiring in 2018

Warrants expiring in 2016

Warrants expiring in 2017

Warrants expiring in 2018

Outstanding options expiring in 2021 with exercise price of $130

Options

warrant

warrant

Related Party Transactions

'

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'

Voting interest held by a stockholder in a related party (as a percent)

'

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'

'

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'

'

'

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100.00%

100.00%

'

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'

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'

'

'

'

'

'

'

'

'

'

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'

'

'

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'

'

Economic interest held by a stockholder in a related party (as a percent)

'

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'

'

'

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'

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82.50%

75.00%

'

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'

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'

'

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'

'

'

'

'

'

'

Number of shares owned by related party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

'

'

'

15,000,000

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

Liquidation value

$15,000,000

'

$15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

$15,000,000

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

$5,500,000

'

'

Non-voting economic interest held by a stockholder in a related party (as a percent)

'

'

'

'

'

'

'

'

'

'

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'

17.50%

15.00%

'

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'

'

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'

'

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'

'

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'

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'

'

'

'

'

'

'

Beneficial ownership held by stockholder in reporting entity (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

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'

'

'

'

'

'

'

Amount paid to related party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,100,000

1,100,000

300,000

1,400,000

1,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,400,000

1,700,000

3,600,000

500,000

4,300,000

5,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount due to related party

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'

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'

0

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'

'

'

'

'

Percentage of gross revenue interest

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

1.00%

'

'

'

'

'

'

2.00%

1.00%

'

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'

'

'

'

'

1.00%

2.00%

Number of shares of redeemable preferred stock issued

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15,000,000

15,000,000

'

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'

'

'

'

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'

'

'

'

'

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'

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'

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'

'

'

'

'

'

Number of warrants issued

'

'

'

'

'

'

'

'

'

'

'

200

'

200

400

'

'

'

'

1,650,348

'

'

'

'

'

'

'

'

'

'

'

'

'

'

781,887

'

'

'

'

1,005,283

'

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'

'

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'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

916,668

'

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'

'

'

'

'

'

'

Exercise price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3.50

$3.50

$4.05

$6

$4.05

$4

'

'

'

'

'

'

'

'

'

'

$130

'

'

$4.05

'

'

'

'

$7.20

$4.05

'

'

$187.50

$130

$4.05

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$6

$15

$4.05

$6

'

'

$6

$15

$4.05

'

'

'

'

Share price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$4.05

$3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

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'

'

'

'

$130

'

'

'

'

'

'

'

'

Strike price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

$2.34

'

$3.06

'

'

'

'

'

'

$3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of additional warrants issued to investor on reduction of strike price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price after issuance of common stock (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum exercise price per share protected from anti-dilution

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain recorded for the change in fair value of the warrants

-5,051,000

-5,619,000

-11,017,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrants outstanding (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,787,171

'

1,787,171

1,031,466

3,936,677

300

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

36,271

35,410

1,787,171

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

739,337

'

'

916,668

'

'

177,331

'

'

'

'

'

'

Common stock outstanding

4,174,039

'

4,174,039

114,969,415

1,451,914

789,783

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

63,763

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock 8% Cumulative Outstanding (in shares)

15,000,000

'

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual cumulative dividend (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8.00%

'

'

'

8.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares issued to a related party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

49,875

15,640

6,000

'

'

'

'

'

'

'

'

15,640

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issued for services (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

1,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

34,483

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price (in dollars per share)

'

'

'

'

'

'

$160.83

$160.71

$212.50

$130

$212.50

'

'

'

'

'

'

'

'

'

'

$130

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$130

'

'

'

'

$130

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares held by related party

'

'

'

'

'

'

'

'

'

4,000

2,000

'

'

'

'

'

'

'

'

'

'

2,800

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

105,998

35,563

'

'

'

'

'

'

'

'

'

2,400

'

'

'

'

2,800

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount due to related party included in accrued liabilities and account payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

25,000

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000

'

'

500,000

800,000

800,000

300,000

800,000

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount payable to related party for services rendered

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$400,000

'

'

$400,000

'

$200,000

'

$200,000

$400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares of common stock issued

4,174,039

'

4,174,039

114,969,415

1,451,914

789,783

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

891,112

'

'

'

'

96,154

199,086

'

'

'

1,090,198

'

'

'

Right to purchase number of shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

52,409

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

96,833

1,095,314

'

'

'

'

37,874

262,713

2,409,402

'

'

'

Number of additional shares of common stock called by each warrant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

Number of additional Series A Warrants called by each warrant (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

Overriding royalty interest (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Assigned royalty interest (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.39%

1.39%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity_Based_Compensation_Deta

Equity Based Compensation (Details) (USD $)

6 Months Ended

12 Months Ended

32 Months Ended

6 Months Ended

12 Months Ended

32 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2013

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Oct. 02, 2013

Sep. 30, 2013

Mar. 31, 2013

Oct. 02, 2013

Sep. 30, 2013

Mar. 31, 2013

Oct. 02, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Outstanding options expiring in 2022 with exercise price of $130

Outstanding options expiring in 2023 with exercise price of $130

Outstanding options expiring in 2022 with exercise price of $144

Outstanding options expiring in 2021 with exercise price of $212.50

Subsequent Event

Minimum

Minimum

Minimum

Maximum

Maximum

Maximum

Stock Options

Stock Options

Stock Options

Stock Options

Subsequent Event

Subsequent Event

Equity Based Compensation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares authorized for issuance

'

'

'

'

1,934,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares authorized expressed as a percentage of outstanding capital stock

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value assumptions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Remaining Term

'

'

'

'

'

'

'

'

'

'

'8 years 2 months 1 day

'5 years

'

'9 years 6 months 4 days

'9 years 5 months 19 days

'

'

'

'

'

Volatility, Minimum (as a percent)

'

'

'

'

113.40%

'

128.57%

'

'

'

'

'

'

'

'

'

'

'

'

'

Volatility, Maximum (as a percent)

'

'

'

'

181.50%

'

181.46%

'

'

'

'

'

'

'

'

'

'

'

'

'

Risk-Free Rate, minimum (as a percent)

'

'

'

'

0.04%

'

0.63%

'

'

'

'

'

'

'

'

'

'

'

'

'

Risk-Free Rate, maximum (as a percent)

'

'

'

'

2.43%

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the beginning of the period (in shares)

'

'

'

'

186,000

68,000

68,000

'

'

'

'

'

'

'

'

'

87,800

10,000

6,000

60,300

Granted (in shares)

'

'

'

'

2,000

'

127,000

'

'

685,000

'

'

'

'

'

'

'

'

'

'

Forfeited or expired (in shares)

'

'

'

'

24,060

'

9,000

'

43,060

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the end of the period (in shares)

'

'

'

'

164,100

'

186,000

68,000

186,000

'

'

'

'

'

'

'

87,800

10,000

6,000

60,300

Vested at the end of the period (in shares)

'

'

'

'

147,767

'

132,000

'

132,000

'

'

'

'

'

'

'

74,467

10,000

3,000

60,300

Weighted-Average Exercise Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the beginning of the period (in dollars per share)

'

'

'

'

$160.71

$212.50

$212.50

'

'

'

'

'

'

'

'

'

$130

$130

$144

$212.50

Granted (in dollars per share)

'

'

'

'

$15

'

$130.66

'

'

'

'

'

$2.25

'

'

$2.36

'

'

'

'

Forfeited or expired (in dollars per share)

'

'

'

'

$147.87

'

$130

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the end of the period (in dollars per share)

'

'

'

'

$160.83

'

$160.71

$212.50

$160.71

'

'

'

'

'

'

'

$130

$130

$144

$212.50

Vested at the end of the period (in dollars per share)

'

'

'

'

$163.95

'

$171.67

'

$171.67

'

'

'

'

'

'

'

'

'

'

'

Weighted-Average Remaining Term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the beginning of the period

'

'

'

'

'8 years 6 months 18 days

'

'9 years 7 days

'7 years 8 months 8 days

'

'

'

'

'

'

'

'

'

'

'

'

Granted during the period

'

'

'

'

'2 years 1 month 6 days

'

'9 years 4 days

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the end of the period

'

'

'

'

'8 years 6 months 18 days

'

'9 years 7 days

'7 years 8 months 8 days

'

'

'

'

'

'

'

'

'

'

'

'

Vested the end of the period

'

'

'

'

'8 years 5 months 23 days

'

'8 years 10 months 13 days

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional disclosures

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average grant date fair value (in dollars per share)

'

'

'

'

$15

$122.50

$95.24

$156.77

$108.43

'

'

'

'

'

'

'

'

'

'

'

Non-vested Stock Options, Shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested at the beginning of the period (in shares)

'

'

'

'

54,000

20,000

20,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Granted (in shares)

'

'

'

'

2,000

'

127,000

'

'

685,000

'

'

'

'

'

'

'

'

'

'

Vested (in shares)

'

'

'

'

-25,550

'

-84,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeited (in shares)

'

'

'

'

-14,000

'

-9,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested at the end of the period (in shares)

'

'

'

'

16,333

'

54,000

20,000

54,000

'

'

'

'

'

'

'

'

'

'

'

Non-vested Stock Options, Weighted Average Grant Date Fair Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested at the beginning of the period (in dollars per share)

'

'

'

'

$99.63

$123.48

$123.48

'

'

'

'

'

'

'

'

'

'

'

'

'

Granted (in dollars per share)

'

'

'

'

$2.10

'

$95.24

'

'

'

'

'

'

'

'

'

'

'

'

'

Vested (in dollars per share)

'

'

'

'

$85.80

'

$96.24

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeited (in dollars per share)

'

'

'

'

$130.59

'

$123.10

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested at the end of the period (in dollars per share)

'

'

'

'

$82.78

'

$99.63

$123.48

$99.63

'

'

'

'

'

'

'

'

'

'

'

Additional disclosures

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total unrecognized compensation expense (in dollars)

'

'

'

'

$400,000

'

$2,200,000

'

$2,200,000

'

'

'

'

'

'

'

'

'

'

'

Weighted-average period over which cost is expected to be recognized

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

Stock-based compensation costs

5,100,000

5,600,000

'

'

200,000

2,600,000

10,300,000

9,700,000

16,900,000

'

'

'

'

'

'

'

'

'

'

'

Stock compensation capitalized (in dollars)

'

'

$3,077,000

$3,078,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrants_Details

Warrants (Details) (USD $)

6 Months Ended

12 Months Ended

32 Months Ended

0 Months Ended

1 Months Ended

6 Months Ended

1 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

38 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2013

Mar. 31, 2013

Nov. 01, 2013

Oct. 02, 2013

Nov. 01, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Nov. 01, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Subsequent Events

Subsequent Events

Subsequent Events

Series A Warrants

Other warrants

Warrants having full ratchet anti-dilution protection rights with exercise price of $3.15 to $4.04

Warrants having full ratchet anti-dilution protection rights with exercise price of $3.15 to $4.04

Warrants having full ratchet anti-dilution protection rights with exercise price of $3.15 to $4.04

Warrants having full ratchet anti-dilution protection rights to $3.50 per share with strike price $4.05

Warrants having full ratchet anti-dilution protection rights with exercise price of $6.00 to $17.00

Warrants having full ratchet anti-dilution protection rights with exercise price of $6.00 to $17.00

Warrants having full ratchet anti-dilution protection rights with exercise price of $6.00 to $17.00

Warrants having full ratchet anti-dilution protection rights with exercise price of $62.50 to $251.00

Warrants having full ratchet anti-dilution protection rights with exercise price of $62.50 to $251.00

Warrants having full ratchet anti-dilution protection rights with exercise price of $62.50 to $251.00

Warrants having full ratchet anti-dilution protection rights

Warrants having full ratchet anti-dilution protection rights

Series B Warrants

Series B Warrants

Warrants expiring on November 1, 2013

Warrants expiring in January 2014

Warrants Issued for Services

Warrants Issued for Services

Warrants Issued for Services

Warrants Issued for Services

Warrants Issued for Services

Investor Warrants

Investor Warrants

Investor Warrants

Investor Warrants

Investor Warrants

Investor Warrants

warrant

warrant

warrant

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

warrant

Example

Minimum

Maximum

Weighted average

Minimum

Minimum

Maximum

Maximum

Weighted average

Warrants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of warrants issued

'

'

'

'

200

200

400

'

'

'

'

'

'

'

'

'

'

'

'

1,650,348

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Strike price (in dollars per share)

'

'

'

'

$2.34

$3.06

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding Warrants (in shares)

'

'

'

'

'

'

'

3,936,677

2,254,663

600

'

'

1,787,171

307,424

'

'

159,468

'

'

3,936,677

300

'

1,031,466

114,798

916,668

'

'

'

'

'

7,100,000

'

'

'

'

'

Exercise price (in dollars per share)

'

'

'

'

'

'

'

$4.05

'

'

$3.15

$4.04

$4.05

'

$6

$17

'

$62.50

$251

$4.05

$4

'

$6

'

'

'

'

$3.15

$251

$150.29

'

$4.05

$150

$150

$212.50

$5.95

Maximum exercise price per share protected from anti-dilution

'

'

'

'

'

'

'

'

'

'

'

'

$3.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of warrants expired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

114,798

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of warrants that expire January 2014

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

916,668

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of additional shares of common stock called by each warrant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of additional Series A Warrants called by each warrant (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

Expiration term

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of common stock that can be purchased against warrants (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000

100,000

'

'

'

'

'

'

'

'

'

Fair value assumptions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 months

'4 years 9 months 18 days

'

'

'1 month 2 days

'

'5 years 8 months 12 days

'

'

Volatility, Minimum (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

121.50%

'

'

'

'

123.60%

'

'

'

'

'

Volatility, Maximum (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

176.70%

'

'

'

'

174.90%

'

'

'

'

'

Risk-Free Rate, minimum (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.02%

'

'

'

'

0.02%

'

'

'

'

'

Risk-Free Rate, maximum (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.30%

'

'

'

'

1.60%

'

'

'

'

'

Stock-based compensation costs

$5,100,000

$5,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock compensation capitalized (in dollars)

'

'

$3,077,000

$3,078,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$500,000

$500,000

'

'

'

'

'

'

'

'

'

Warrants committed for issuance in the next twelve months (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400

400

'

'

'

'

'

'

'

'

'

Share price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$4.05

$3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of additional warrants issued to investor on reduction of strike price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stockholders_Equity_Details

Stockholders' Equity (Details) (USD $)

0 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

32 Months Ended

38 Months Ended

0 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

3 Months Ended

Sep. 04, 2013

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Sep. 03, 2013

Aug. 27, 2012

Oct. 06, 2013

Oct. 04, 2013

Jun. 26, 2013

Sep. 30, 2013

Oct. 04, 2013

Aug. 30, 2013

Aug. 14, 2013

Sep. 30, 2013

Sep. 30, 2013

Aug. 30, 2013

Aug. 30, 2013

Sep. 30, 2013

Subsequent Events

Subsequent Events

Public Offering

Two stockholders

Brownstein Hyatt

Redeemable preferred stock

Redeemable preferred stock

Redeemable preferred stock

Redeemable preferred stock

Redeemable preferred stock

Redeemable preferred stock

Redeemable preferred stock

Subsequent Events

Subsequent Events

Two stockholders

Two stockholders

Two stockholders

Two stockholders

Public Offering

Public Offering

Very Hungry Notes

Series A Warrants

Series B Warrants

Shareholders' Equity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reverse stock split

0.02

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issued and outstanding on completion of reverse stock split

2,299,388

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares authorized

'

300,000,000

300,000,000

100,000,000

300,000,000

300,000,000

'

300,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, par value (in dollars per share)

'

$0.00

$0.00

$0.00

$0.00

$0.00

'

'

'

'

$0.00

'

'

'

'

'

'

'

'

'

Common stock issued (in shares)

'

4,174,039

4,174,039

789,783

1,451,914

4,174,039

114,969,415

'

'

'

'

1,090,198

'

'

'

'

'

'

'

'

Common stock outstanding (in shares)

'

4,174,039

4,174,039

789,783

1,451,914

4,174,039

114,969,415

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issued for services (in shares)

'

'

'

'

'

'

'

'

'

1,500

'

'

34,483

'

'

'

'

'

'

'

Preferred Stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, shares authorized

'

'

'

10,000,000

100,000,000

'

'

100,000,000

'

'

'

'

'

'

'

100,000,000

'

'

'

'

Preferred stock, par value (in dollars per share)

'

'

'

$0.00

$0.00

'

'

'

'

'

'

'

'

'

'

$0.00

'

'

'

'

Number of shares of redeemable preferred stock issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15,000,000

'

'

'

'

Number of shares of redeemable preferred stock outstanding

'

15,000,000

15,000,000

'

'

15,000,000

'

'

'

'

'

'

'

'

'

15,000,000

'

'

'

'

Liquidation value

'

$15,000,000

$15,000,000

'

'

$15,000,000

'

'

'

'

'

'

'

'

'

'

$5,500,000

'

'

'

Number of mandatorily convertible preferred stock shares issued in exchange for the redemption of convertible notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,500,000

Amount of debt exchanged

'

'

'

8,417,000

9,493,000

9,493,000

'

'

'

'

'

'

'

'

'

'

'

'

'

5,500,000

Redeemable non-convertible and non-voting and preferred stock interest percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8.00%

'

'

'

'

Market capitalization cap percentage for redemption

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

10.00%

'

'

'

'

Number of shares of common stock sold

'

'

'

'

'

'

'

'

1,500

'

833,334

'

'

916,668

'

'

'

'

'

'

Warrants issued (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

916,668

916,668

'

Loss on debt extinguishment

'

-1,740,000

11,374,000

-2,000,000

-2,000,000

9,374,000

'

'

'

'

'

'

'

'

'

2,100,000

'

'

'

'

Beneficial conversion recorded and amortized through additional paid-in capital

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$700,000

'

'

'

'

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2013	Sep. 30, 2013
In Thousands, unless otherwise specified			Warrant	Embedded derivative
				t
Derivative Financial Instruments	'	'	'	'
Derivative liability	$17,055	$4,060	$17,100	$700
Minimum quantity of potash that has first been shipped for delivery from Holbrook Project (in tonnes)	'	'	'	50,000
Period for redemption by holder of redeemable preferred stock following the month in which a specified quantity of potash has first been shipped for delivery at Holbrook Project	'	'	'	'3 years

Loss_per_Share_Details

Loss per Share (Details) (USD $)

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

20 Months Ended

23 Months Ended

26 Months Ended

29 Months Ended

32 Months Ended

38 Months Ended

In Thousands, except Share data, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2012

Jun. 30, 2012

Sep. 30, 2012

Dec. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Numerator

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Loss attributable to Prospect Global Resources Inc.

($18,361)

($34,085)

($22,107)

($6,571)

($17,344)

($28,678)

($62,764)

($79,854)

($63,566)

($80,399)

($86,970)

($109,077)

($140,162)

($160,254)

($177,598)

Undeclared Preferred Stock Dividends

-160

'

'

'

-160

'

'

'

'

'

'

'

'

'

-160

Net loss applicable to common shares for basic and diluted earnings per share

($18,521)

'

($22,107)

'

($17,504)

($28,678)

'

'

'

'

'

'

'

'

($177,758)

Denominator

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average number of common shares outstanding - basic

2,737,000

'

1,094,000

'

2,124,000

943,000

'

1,155,000

560,000

'

'

'

'

716,000

1,169,000

Weighted average number of common shares outstanding - fully diluted

2,737,000

'

1,094,000

'

2,124,000

943,000

'

1,155,000

560,000

'

'

'

'

716,000

1,169,000

Basic and fully diluted loss per share of common stock (in dollars per share)

($6.77)

[1]

($26.50)

($20.21)

[1]

($8.32)

($8.24)

[1]

($30.41)

[1]

($59.32)

($69.14)

[1]

($113.51)

[1]

($174.40)

($172.22)

($189.70)

($218.66)

($223.82)

[1]

($152.06)

[1]

Antidilutive potentially dilutive warrants and options which were not included in the computation of Loss Per Share (in shares)

'

'

'

'

7,346,907

'

'

600,000

'

'

'

'

'

'

'

[1]

All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)

0 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

0 Months Ended

1 Months Ended

6 Months Ended

1 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

12 Months Ended

6 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

1 Months Ended

6 Months Ended

12 Months Ended

Jun. 14, 2013

Sep. 30, 2013

Mar. 31, 2013

Nov. 01, 2013

Oct. 06, 2013

Oct. 02, 2013

Nov. 01, 2013

Sep. 30, 2013

Sep. 30, 2013

Jun. 14, 2013

Jun. 26, 2013

Sep. 30, 2013

Jun. 26, 2013

Sep. 30, 2013

Jun. 26, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Nov. 30, 2011

Aug. 01, 2012

Mar. 31, 2013

Sep. 30, 2013

Apr. 15, 2013

Sep. 30, 2013

Apr. 15, 2013

Mar. 31, 2013

Sep. 30, 2013

Apr. 15, 2013

Aug. 14, 2013

Aug. 01, 2012

Sep. 30, 2013

Apr. 15, 2013

Sep. 30, 2013

Aug. 01, 2012

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Aug. 01, 2012

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2013

item

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Debt

Land and lease payment

Public Offering

Public Offering

Series B Warrants

Series B Warrants

Series B Warrants

Series B Warrants

Warrants having full ratchet anti-dilution protection rights

Warrants having full ratchet anti-dilution protection rights to $3.50 per share with strike price $4.05

Warrants having full ratchet anti-dilution protection rights with strike price $6.00

Warrants having full ratchet anti-dilution protection rights with strike price $7.20

Example

Stockholder claims

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Affiliates of Apollo Global Management, LLC

Affiliates of Apollo Global Management, LLC

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Grandhaven

Very Hungry LLC [Member]

AWP

AWP

AWP

AWP

AWP

AWP

warrant

warrant

warrant

item

Subsequent Events

Public Offering

Public Offering

Public Offering

warrant

Warrants having full ratchet anti-dilution protection rights

Karlsson Note Amendment

Extension Agreement

Extension Agreement

Extension Agreement

Extension Agreement

Apollo Notes

Extension Agreement

Warrants having full ratchet anti-dilution protection rights to $3.50 per share with strike price $4.05

Extension Agreement

Extension Agreement

Series B Warrants

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

warrant

Subsequent Events

Subsequent Events

Subsequent Events

Apollo Notes

warrant

warrant

Forecast

Forecast

Forecast

Subsequent Events

Minimum

Commitments and Contingencies

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Royalty as a percentage of gross sales

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.00%

'

'

'

'

15.00%

15.00%

'

'

'

1.00%

'

'

'

1.00%

'

'

'

'

15.00%

15.00%

'

Percentage of ownership interest held by non-controlling owners

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

50.00%

50.00%

'

'

50.00%

Cap amount of royalty granted as a percentage of gross sales

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$75,000,000

$75,000,000

'

Percentage of net proceeds of note to be deposited into escrow

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from issuance of capital

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

18,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount to be deposited into escrow

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of gross proceeds agreed to be paid to party to agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal payments payable expressed as a percentage of gross proceeds

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of gross revenue interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

2.00%

'

'

'

'

1.00%

'

'

2.00%

1.00%

'

'

'

'

'

'

'

'

Major Contractual Obligations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Less than 1-year

'

'

'

'

'

'

'

2,328,000

363,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1-2 years

'

'

'

'

'

'

'

166,805,000

609,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Thereafter

'

'

'

'

'

'

'

'

729,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total

'

'

'

'

'

'

'

169,133,000

1,701,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments to issue additional shares of common stock under existing service contracts

'

10,500

13,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments to issue additional warrants under existing service contracts

'

400

1,600

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments to issue additional shares of common stock under existing service contracts due in quarterly increments

'

1,500

1,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock issued in public offerings (in shares)

'

'

'

'

1,500

'

'

'

'

'

833,334

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments to issue additional warrants under existing service contracts due in monthly tranches

'

200

200

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period of each warrant tranche

'

'5 years

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of warrants issued

'

'

'

200

'

200

400

'

'

'

'

'

856,798

'

'

1,650,348

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

781,887

'

'

'

916,668

'

'

'

'

'

'

Maximum exercise price per share protected from anti-dilution

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

$6

$6

'

$6

$4.05

$4.05

$6

$7.20

$4

'

'

'

'

'

'

'

'

'

'

'

$130

$4.05

'

'

'

$6

'

'

'

'

'

'

Warrants outstanding (in shares)

'

'

'

'

'

'

'

'

'

'

'

1,031,466

'

114,798

'

3,936,677

1,787,171

'

'

300

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

916,668

'

'

'

'

'

'

Number of additional Series A Warrants called by each warrant (in shares)

'

'

'

'

'

'

'

'

'

'

'

1

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

Number of additional shares of common stock and exercisable warrant called by each warrant

'

'

'

'

'

'

'

'

'

'

'

1

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

Expiration period from date of issuance

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

Share price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$4.05

'

'

'

$3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Strike price (in dollars per share)

'

'

'

$2.34

'

$3.06

'

'

'

'

'

'

'

'

'

'

'

'

'

$3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of additional warrants issued to investor on reduction of strike price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Value of shares purchased by shareholder in public offering

'

$805,000

$66,290,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of underwriters

4

'

'

'

'

'

'

'

'

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair_Value_Measurement_Details

Fair Value Measurement (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013
Liabilities:	'	'
Buffalo embedded derivative	$650,000	'
Derivative warrant liability	17,055,000	4,060,000
Recurring | Level 2	'	'
Liabilities:	'	'
Tax compensation	17,629,000	6,226,000
Total liabilities	17,629,000	6,226,000
Recurring | Level 3	'	'
Liabilities:	'	'
Buffalo embedded derivative	650,000	'
Derivative warrant liability	17,055,000	'
Total liabilities	17,705,000	'
Recurring | Total	'	'
Liabilities:	'	'
Tax compensation	17,629,000	6,226,000
Buffalo embedded derivative	650,000	'
Derivative warrant liability	17,055,000	'
Total liabilities	$35,334,000	$6,226,000

Fair_Value_Measurement_Details1

Fair Value Measurement (Details 2) (Non-recurring, USD $)	Mar. 31, 2013	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2013
In Thousands, unless otherwise specified	Carrying Value	Carrying Value	Fair Value	Fair Value
	Level 1	Level 3	Level 1	Level 3
Fair Value Measurement	'	'	'	'
Debt	$122,032	$127,532	$112,110	$94,203

Fair_Value_Measurement_Details2

Fair Value Measurement (Details 3) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Mar. 31, 2011
	Very Hungry LLC [Member]	Buffalo Management Llc [Member]	Derivative Warrant Liability	Derivative Financial Information
Changes in the fair value of the Level 3 financial liabilities	'	'	'	'
Balance at the beginning of the period	'	'	'	($17,288)
Mark-to-market adjustment	'	'	17,055	'
Extinguishment	-2,900	'	'	'
New instrument - initial valuation	2,900	650	'	'
Balance at the end of the period	'	$650	$17,055	($17,288)

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	0 Months Ended
In Millions, unless otherwise specified	Apr. 25, 2013
Subsequent Events	'
Market value required for continued inclusion on the Nasdaq Capital Market based on Listing Rule	$35
Number of calendar days to regain compliance rules related to minimum market value	'180 days
Minimum	'
Subsequent Events	'
Number of consecutive business days for which the market value of listed securities has fallen below the $35 million minimum requirement for continued listing	'30 days
Number of consecutive business days to regain compliance rules during specified calendar days related to minimum market value	'10 days
Subsequent Events	'
Subsequent Events	'
Market value required for continued inclusion on the Nasdaq Capital Market based on Listing Rule	$35
Number of consecutive business days for which the market value of listed securities has fallen below the $35 million minimum requirement for continued listing	'30 days
Number of calendar days to regain compliance rules related to minimum market value	'180 days

Restatement_Details

Restatement (Details) (USD $)

0 Months Ended

3 Months Ended

6 Months Ended

8 Months Ended

9 Months Ended

12 Months Ended

20 Months Ended

23 Months Ended

26 Months Ended

29 Months Ended

32 Months Ended

38 Months Ended

Sep. 04, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2011

Mar. 31, 2011

Dec. 31, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2012

Jun. 30, 2012

Sep. 30, 2012

Dec. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

ASSETS

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mineral properties

'

$13,690,000

$12,190,000

$12,190,000

$12,190,000

$13,690,000

$12,190,000

'

'

$12,190,000

$13,690,000

$12,091,000

$12,091,000

$12,190,000

$12,190,000

$12,190,000

$13,690,000

$13,690,000

Total noncurrent assets

'

14,884,000

12,963,000

12,792,000

12,494,000

14,884,000

12,792,000

'

'

12,963,000

14,787,000

12,253,000

12,253,000

12,494,000

12,792,000

12,963,000

14,787,000

14,884,000

Total assets

'

18,097,000

23,750,000

24,758,000

14,194,000

18,097,000

24,758,000

'

'

23,750,000

17,007,000

24,407,000

24,407,000

14,194,000

24,758,000

23,750,000

17,007,000

18,097,000

LIABILITIES AND EQUITY

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional paid-in capital

'

37,330,000

[1]

29,219,000

-3,416,000

86,758,000

37,330,000

[1]

-3,416,000

'

'

29,219,000

30,335,000

[1]

91,997,000

[1]

91,997,000

[1]

86,758,000

-3,416,000

29,219,000

30,335,000

[1]

37,330,000

[1]

Losses accumulated in the exploration stage

'

-177,598,000

[1]

-143,163,000

-109,077,000

-86,971,000

-177,598,000

[1]

-109,077,000

'

'

-143,163,000

-160,254,000

[1]

-80,400,000

[1]

-80,400,000

[1]

-86,971,000

-109,077,000

-143,163,000

-160,254,000

[1]

-177,598,000

[1]

Total shareholders' deficit

'

-140,264,000

[1]

-113,944,000

-112,492,000

4,765,000

-140,264,000

[1]

-112,492,000

-4,762,000

-4,762,000

-113,944,000

-129,918,000

[1]

18,831,000

[1]

18,831,000

[1]

4,765,000

-112,492,000

-113,944,000

-129,918,000

[1]

-140,264,000

[1]

Total liabilities, redeemable preferred stock and shareholders' deficit

'

18,097,000

23,750,000

24,758,000

14,194,000

18,097,000

24,758,000

'

'

23,750,000

17,007,000

24,407,000

[1]

24,407,000

[1]

14,194,000

24,758,000

23,750,000

17,007,000

18,097,000

Consolidated Statement of Operations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exploration

'

2,859,000

5,646,000

5,802,000

5,568,000

4,071,000

11,370,000

'

'

17,016,000

18,575,000

6,002,000

6,648,000

12,216,000

18,018,000

23,664,000

25,223,000

29,294,000

General and administrative

'

'

'

15,247,000

'

'

19,507,000

'

'

'

'

'

'

'

'

'

'

'

General and administrative

'

2,261,000

16,047,000

9,628,000

4,260,000

4,355,000

13,888,000

'

'

35,554,000

48,458,000

17,206,000

18,693,000

22,953,000

38,199,000

54,246,000

67,151,000

65,540,000

Off-take arrangement fee

'

-438,000

'

'

'

-438,000

'

'

'

'

'

'

'

'

'

'

'

7,313,000

Total expenses

'

6,432,000

29,444,000

21,049,000

9,828,000

13,039,000

30,877,000

'

'

60,321,000

74,784,000

23,208,000

25,341,000

35,169,000

56,217,000

85,661,000

100,125,000

113,164,000

Loss from operations

'

-6,432,000

-29,444,000

-21,049,000

-9,828,000

-13,039,000

-30,877,000

'

'

-60,321,000

-74,784,000

-23,208,000

-25,341,000

-35,169,000

-56,217,000

-85,661,000

-100,125,000

-113,164,000

Net loss

'

-18,361,000

-34,085,000

-22,920,000

-9,828,000

-17,344,000

-32,748,000

-17,209,000

-17,209,000

-66,833,000

-83,925,000

-66,957,000

-84,166,000

-93,994,000

-116,914,000

-150,999,000

-168,091,000

-185,435,000

Net loss attributable to non-controlling interest

'

'

'

813,000

3,257,000

'

4,070,000

'

'

4,069,000

4,071,000

3,391,000

3,767,000

7,024,000

7,837,000

7,837,000

7,837,000

7,837,000

Net loss attributable to Prospect Global Resources Inc.

'

-18,361,000

-34,085,000

-22,107,000

-6,571,000

-17,344,000

-28,678,000

'

'

-62,764,000

-79,854,000

-63,566,000

-80,399,000

-86,970,000

-109,077,000

-140,162,000

-160,254,000

-177,598,000

Loss per share (in dollars per share)

'

($6.77)

[1]

($26.50)

($20.21)

[1]

($8.32)

($8.24)

[1]

($30.41)

[1]

'

'

($59.32)

($69.14)

[1]

($113.51)

[1]

($174.40)

($172.22)

($189.70)

($218.66)

($223.82)

[1]

($152.06)

[1]

Operating activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

'

-18,361,000

-34,085,000

-22,920,000

-9,828,000

-17,344,000

-32,748,000

-17,209,000

-17,209,000

-66,833,000

-83,925,000

-66,957,000

-84,166,000

-93,994,000

-116,914,000

-150,999,000

-168,091,000

-185,435,000

Services paid for with securities

'

'

'

'

'

538,000

455,000

'

'

4,547,000

4,653,000

2,064,000

'

'

'

6,928,000

7,033,000

7,572,000

Stock-based compensation

'

'

'

'

'

175,000

5,063,000

'

'

15,227,000

16,239,000

9,717,000

'

'

20,400,000

24,945,000

25,957,000

20,165,000

Share based compensation and warrant expense

'

'

'

'

'

'

10,682,000

'

'

'

'

'

'

'

'

'

'

'

Accounts payable and accrued liabilities

'

'

'

'

'

-1,964,000

4,759,000

'

'

'

'

'

'

'

'

'

'

5,404,000

Net cash used in operating activities

'

'

'

'

-5,769,000

-10,222,000

-14,706,000

'

'

-28,091,000

-34,823,000

-11,349,000

-12,618,000

-17,887,000

-27,323,000

-40,708,000

-47,443,000

-57,665,000

Investing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mineral properties

'

'

'

'

-98,000

'

-98,000

'

'

-98,000

-1,599,000

-1,043,000

-1,091,000

-1,189,000

-1,189,000

-1,190,000

-2,690,000

-2,690,000

Net cash used in investing activities

'

'

'

'

-5,247,000

-395,000

-494,000

'

'

-740,000

-2,618,000

-1,124,000

-1,180,000

-6,928,000

-1,674,000

-1,921,000

-3,796,000

-4,191,000

Reverse stock split

0.02

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

As Reported

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

ASSETS

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mineral properties

'

45,140,000

35,991,000

29,036,000

20,067,000

45,140,000

29,036,000

'

'

35,991,000

39,994,000

13,468,000

13,468,000

20,067,000

29,036,000

35,991,000

39,994,000

45,140,000

Deferred fees

'

7,313,000

'

'

'

7,313,000

'

'

'

'

'

'

'

'

'

'

'

7,313,000

Total noncurrent assets

'

53,647,000

44,517,000

29,638,000

20,371,000

53,647,000

29,638,000

'

'

44,517,000

48,842,000

13,630,000

13,630,000

20,371,000

29,638,000

44,517,000

48,842,000

53,647,000

Total assets

'

56,860,000

55,304,000

41,604,000

22,071,000

56,860,000

41,604,000

'

'

55,304,000

51,062,000

25,784,000

25,784,000

22,071,000

41,604,000

55,304,000

51,062,000

56,860,000

LIABILITIES AND EQUITY

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional paid-in capital

'

44,119,000

34,265,000

1,275,000

86,719,000

44,119,000

1,275,000

'

'

34,265,000

35,641,000

91,957,000

91,957,000

86,719,000

1,275,000

34,265,000

35,641,000

44,119,000

Losses accumulated in the exploration stage

'

-145,624,000

-116,727,000

-96,977,000

-83,032,000

-145,624,000

-96,977,000

'

'

-116,727,000

-131,577,000

-79,711,000

-79,711,000

-83,032,000

-96,977,000

-116,727,000

-131,577,000

-145,624,000

Total shareholders' deficit

'

-101,501,000

-82,390,000

-95,646,000

12,642,000

-101,501,000

-95,646,000

'

'

-82,390,000

'

20,208,000

20,208,000

12,642,000

-95,646,000

-82,390,000

'

-101,501,000

Total liabilities, redeemable preferred stock and shareholders' deficit

'

56,860,000

55,304,000

41,604,000

22,071,000

56,860,000

41,604,000

'

'

55,304,000

51,062,000

25,784,000

25,784,000

22,071,000

41,604,000

55,304,000

51,062,000

56,860,000

Consolidated Statement of Operations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exploration

'

'

'

'

'

'

'

'

'

'

'

4,954,000

5,600,000

5,600,000

5,600,000

5,600,000

5,600,000

5,600,000

General and administrative

'

1,902,000

15,110,000

12,080,000

3,328,000

4,691,000

15,408,000

'

'

30,518,000

42,737,000

16,877,000

18,364,000

21,692,000

33,771,000

48,881,000

61,102,000

59,826,000

Total expenses

'

3,652,000

15,110,000

12,080,000

3,328,000

9,742,000

15,408,000

'

'

30,518,000

42,737,000

21,831,000

23,964,000

27,292,000

39,371,000

54,481,000

66,702,000

76,443,000

Loss from operations

'

-3,652,000

-15,110,000

-12,080,000

-3,328,000

-9,742,000

-15,408,000

'

'

-30,518,000

-42,737,000

-21,831,000

-23,964,000

-27,292,000

-39,371,000

-54,481,000

-66,702,000

-76,443,000

Net loss

'

-15,581,000

-19,751,000

-13,951,000

-3,328,000

-14,047,000

-17,279,000

'

'

-37,030,000

-51,878,000

-65,580,000

-82,789,000

-86,117,000

-100,068,000

-119,819,000

-134,668,000

-148,715,000

Net loss attributable to non-controlling interest

'

'

'

6,000

7,000

'

13,000

'

'

12,000

12,000

2,702,000

3,078,000

3,085,000

3,091,000

3,091,000

3,090,000

3,090,000

Net loss attributable to Prospect Global Resources Inc.

'

-15,581,000

-19,751,000

-13,945,000

-3,321,000

-14,047,000

-17,266,000

'

'

-37,018,000

-51,866,000

-62,878,000

-79,711,000

-83,032,000

-96,977,000

-116,728,000

-131,578,000

-145,624,000

Loss per share (in dollars per share)

'

($5.75)

($15.36)

($12.75)

($4.20)

($6.69)

($18.31)

'

'

($34.99)

($44.91)

($112.28)

($172.91)

($164.42)

($168.66)

($182.10)

($183.77)

($124.71)

Operating activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

'

-15,581,000

-19,751,000

-13,951,000

-3,328,000

-14,047,000

-17,279,000

'

'

-37,030,000

-51,878,000

-65,580,000

-82,789,000

-86,117,000

-100,068,000

-119,819,000

-134,668,000

-148,715,000

Services paid for with securities

'

'

'

'

'

'

'

'

'

672,000

776,000

'

'

'

'

3,052,000

3,156,000

3,695,000

Stock-based compensation

'

'

'

'

'

1,103,000

'

'

'

12,649,000

13,794,000

'

'

'

17,946,000

22,367,000

23,512,000

18,648,000

Share based compensation and warrant expense

'

'

'

'

'

'

8,228,000

'

'

'

'

'

'

'

'

'

'

'

Deferred fees

'

'

'

'

'

'

'

'

'

-1,938,000

-2,287,000

'

'

'

'

-1,938,000

-2,288,000

-2,288,000

Accounts payable and accrued liabilities

'

'

'

'

'

223,000

'

'

'

'

'

'

'

'

'

'

'

861,000

Net cash used in operating activities

'

'

'

'

-2,079,000

-3,810,000

-5,719,000

'

'

-12,650,000

-17,645,000

-10,443,000

-11,712,000

-13,292,000

-17,430,000

-24,363,000

-29,360,000

-33,170,000

Investing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mineral properties

'

'

'

'

-3,788,000

-6,412,000

-9,085,000

'

'

-15,539,000

-18,777,000

-1,949,000

-1,997,000

-5,784,000

-11,082,000

-17,535,000

-20,773,000

-27,185,000

Net cash used in investing activities

'

'

'

'

-8,937,000

-6,807,000

-9,481,000

'

'

-16,181,000

-19,796,000

-2,030,000

-2,086,000

-11,523,000

-11,567,000

-18,266,000

-21,879,000

-28,686,000

Previously capitalized costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reduction in General and Administrative expenses

'

'

'

'

'

1,400,000

'

'

'

400,000

600,000

'

'

'

'

'

'

'

Previously capitalized costs | Adjustment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

ASSETS

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mineral properties

'

31,450,000

'

'

'

31,450,000

'

'

'

'

'

'

'

'

'

'

'

31,450,000

Deferred fees

'

-7,313,000

'

'

'

-7,313,000

'

'

'

'

'

'

'

'

'

'

'

-7,313,000

Total noncurrent assets

'

-38,763,000

'

'

'

-38,763,000

'

'

'

'

'

'

'

'

'

'

'

-38,763,000

Total assets

'

-38,763,000

'

'

'

-38,763,000

'

'

'

'

'

'

'

'

'

'

'

-38,763,000

LIABILITIES AND EQUITY

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional paid-in capital

'

-6,789,000

'

'

'

-6,789,000

'

'

'

'

'

'

'

'

'

'

'

-6,789,000

Losses accumulated in the exploration stage

'

-31,974,000

'

'

'

-31,974,000

'

'

'

'

'

'

'

'

'

'

'

-31,974,000

Total shareholders' deficit

'

-38,763,000

'

'

'

-38,763,000

'

'

'

'

'

'

'

'

'

'

'

-38,763,000

Total liabilities, redeemable preferred stock and shareholders' deficit

'

-38,763,000

'

'

'

-38,763,000

'

'

'

'

'

'

'

'

'

'

'

-38,763,000

Consolidated Statement of Operations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exploration

'

2,859,000

'

5,802,000

'

4,071,000

11,370,000

'

'

'

'

'

'

'

'

'

'

23,694,000

General and administrative

'

359,000

'

3,167,000

'

-336,000

4,099,000

'

'

'

'

'

'

'

'

'

'

5,714,000

Off-take arrangement fee

'

-438,000

'

'

'

-438,000

'

'

'

'

'

'

'

'

'

'

'

7,313,000

Total expenses

'

2,780,000

'

8,969,000

'

3,297,000

15,469,000

'

'

'

'

'

'

'

'

'

'

36,721,000

Loss from operations

'

-2,780,000

'

-8,969,000

'

-3,297,000

-15,469,000

'

'

'

'

'

'

'

'

'

'

-36,721,000

Net loss

'

-2,780,000

'

-8,969,000

'

-3,297,000

-15,469,000

'

'

'

'

'

'

'

'

'

'

-36,720,000

Net loss attributable to non-controlling interest

'

'

'

-807,000

'

'

-4,057,000

'

'

'

'

'

'

'

'

'

'

4,747,000

Net loss attributable to Prospect Global Resources Inc.

'

-2,780,000

'

-8,162,000

'

-3,297,000

-11,412,000

'

'

'

'

'

'

'

'

'

'

-31,974,000

Loss per share (in dollars per share)

'

($1.02)

'

($7.46)

'

($1.55)

($12.10)

'

'

'

'

'

'

'

'

'

'

($27.35)

Operating activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loss

'

-2,780,000

'

-8,969,000

'

-3,297,000

-15,469,000

'

'

'

'

'

'

'

'

'

'

-36,720,000

Services paid for with securities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,877,000

Stock-based compensation

'

'

'

'

'

-928,000

2,454,000

'

'

'

'

'

'

'

'

'

'

1,517,000

Deferred fees

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,288,000

Accounts payable and accrued liabilities

'

'

'

'

'

-2,187,000

4,028,000

'

'

'

'

'

'

'

'

'

'

4,543,000

Net cash used in operating activities

'

'

'

'

'

-6,412,000

-8,987,000

'

'

'

'

'

'

'

'

'

'

-24,495,000

Investing activities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mineral properties

'

'

'

'

'

6,412,000

8,987,000

'

'

'

'

'

'

'

'

'

'

24,495,000

Net cash used in investing activities

'

'

'

'

'

$6,412,000

$8,987,000

'

'

'

'

'

'

'

'

'

'

$24,495,000

[1]

All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.

CONSOLIDATED_BALANCE_SHEETS1

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2013		Mar. 31, 2012
In Thousands, unless otherwise specified
Current assets	'		'
Cash and cash equivalents	$1,024		$11,300
Accounts receivable	6		1
Related party receivable	25		25
Other current assets	1,165		828
Total current assets	2,220		12,154
Noncurrent assets	'		'
Land	380		'
Mineral properties	13,690		12,091
Equipment (net of accumulated depreciation of $132 and $6, respectively)	613		82
Deposits	104		80
Total noncurrent assets	14,787		12,253
Total assets	17,007		24,407
Current liabilities	'		'
Accounts payable	2,849		672
Accrued liabilities	11,758		844
Current portion of long-term debt	122,032		'
Tax gross-up on note payable (Note 8)	6,226		'
Grandhaven Option (Note 11)	4,060		'
Total current liabilities	146,925		1,516
Grandhaven Option (Note 11)	4,060		4,060
Total liabilities	146,925		5,576
Commitments and Contingencies (Note 16)	'		'
SHAREHOLDERS' EQUITY (DEFICIT) (1)	'		'
Preferred stock: $0.001 par value; 100,000,000 shares authorized (increased on August 27, 2012 from 10,000,000); none outstanding	'		'
Common stock: $0.001 par value; 300,000,000 shares authorized (increased on August 27, 2012 from 100,000,000); 1,451,914 and 789,783 issued and outstanding at March 31, 2013 and 2012, respectively	1	[1]	'
Additional paid-in capital	30,335	[1]	91,997	[1]
Losses accumulated in the exploration stage	-160,254	[1]	-80,400	[1]
Total shareholders' equity (deficit) - Prospect Global Resources Inc.	-129,918	[1]	11,597	[1]
Non-controlling interest	'		7,234	[1]
Total shareholders' deficit	-129,918	[1]	18,831	[1]
Total liabilities, redeemable preferred stock and shareholders' deficit	$17,007		$24,407	[1]
[1]	All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.

CONSOLIDATED_BALANCE_SHEETS_Pa1

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	0 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 04, 2013	Sep. 30, 2013	Sep. 03, 2013	Mar. 31, 2013	Aug. 27, 2012	Mar. 31, 2012
CONSOLIDATED BALANCE SHEETS	'	'	'	'	'	'
Equipment, accumulated depreciation (in dollars)	'	$230	'	$132	'	$6
Reverse stock split	0.02	'	'	'	'	'
Preferred stock, par value (in dollars per share)	'	'	'	$0.00	'	$0.00
Preferred stock, shares authorized	'	'	'	100,000,000	100,000,000	10,000,000
Preferred stock, shares issued	'	'	'	0	'	'
Common stock, par value (in dollars per share)	'	$0.00	'	$0.00	'	$0.00
Common stock, shares authorized	'	300,000,000	'	300,000,000	300,000,000	100,000,000
Common stock, shares issued	'	4,174,039	114,969,415	1,451,914	'	789,783
Common stock, shares outstanding	'	4,174,039	114,969,415	1,451,914	'	789,783

CONSOLIDATED_STATEMENT_OF_OPER2

CONSOLIDATED STATEMENT OF OPERATIONS (USD $)	3 Months Ended						6 Months Ended				8 Months Ended		9 Months Ended	12 Months Ended				20 Months Ended	23 Months Ended	26 Months Ended	29 Months Ended	32 Months Ended		38 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012	Sep. 30, 2012		Jun. 30, 2012	Sep. 30, 2013		Sep. 30, 2012		Mar. 31, 2011	Mar. 31, 2011	Dec. 31, 2012	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2012	Jun. 30, 2012	Sep. 30, 2012	Dec. 31, 2012	Mar. 31, 2013		Sep. 30, 2013
Expenses:	'		'	'		'	'		'		'	'	'	'		'		'	'	'	'	'		'
Exploration	$2,859		$5,646	$5,802		$5,568	$4,071		$11,370		'	'	$17,016	$18,575		$6,002		$6,648	$12,216	$18,018	$23,664	$25,223		$29,294
General and administrative	2,261		16,047	9,628		4,260	4,355		13,888		'	'	35,554	48,458		17,206		18,693	22,953	38,199	54,246	67,151		65,540
Off-take arrangement fee (Note 6)	'		7,751	'		'	'		'		'	'	7,751	7,751		'		'	'	'	7,751	7,751		'
Total expenses	6,432		29,444	21,049		9,828	13,039		30,877		'	'	60,321	74,784		23,208		25,341	35,169	56,217	85,661	100,125		113,164
Loss from operations	-6,432		-29,444	-21,049		-9,828	-13,039		-30,877		'	'	-60,321	-74,784		-23,208		-25,341	-35,169	-56,217	-85,661	-100,125		-113,164
Other expense:	'		'	'		'	'		'		'	'	'	'		'		'	'	'	'	'		'
Derivative losses	-1,388		'	'		'	1,512		'		'	'	'	-1,900		-39,810		'	'	'	'	-56,666		-55,154
Loss on debt extinguishment	-1,740		'	'		'	11,374		'		'	'	'	'		-2,000		'	'	'	'	-2,000		9,374
Interest, net	-8,222		'	-1,871		'	-16,610		-1,871		'	'	'	-7,241		-1,939		'	'	'	'	-9,300		-25,910
Total other expenses	-11,929		'	-1,871		'	-4,305		-1,871		'	'	'	-9,141		-43,749		'	'	'	'	-67,966		-72,271
Income tax expense	'		'	'		'	'		'		'	'	'	0		'		'	'	'	'	'		'
Net loss	-18,361		-34,085	-22,920		-9,828	-17,344		-32,748		-17,209	-17,209	-66,833	-83,925		-66,957		-84,166	-93,994	-116,914	-150,999	-168,091		-185,435
Net loss attributable to non-controlling interest	'		'	813		3,257	'		4,070		'	'	4,069	4,071		3,391		3,767	7,024	7,837	7,837	7,837		7,837
Net loss attributable to Prospect Global Resources Inc.	($18,361)		($34,085)	($22,107)		($6,571)	($17,344)		($28,678)		'	'	($62,764)	($79,854)		($63,566)		($80,399)	($86,970)	($109,077)	($140,162)	($160,254)		($177,598)
Earnings per share Basic and diluted	'		'	'		'	'		'		'	'	'	'		'		'	'	'	'	'		'
Loss per share (in dollars per share)	($6.77)	[1]	($26.50)	($20.21)	[1]	($8.32)	($8.24)	[1]	($30.41)	[1]	'	'	($59.32)	($69.14)	[1]	($113.51)	[1]	($174.40)	($172.22)	($189.70)	($218.66)	($223.82)	[1]	($152.06)	[1]
Weighted average number of shares outstanding (in shares)	2,737		'	1,094		'	2,124		943		'	'	'	1,155		560		'	'	'	'	716		1,169
[1]	All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.

CONSOLIDATED_STATEMENT_OF_OPER3

CONSOLIDATED STATEMENT OF OPERATIONS (Parenthetical)	0 Months Ended
	Sep. 04, 2013
CONSOLIDATED STATEMENT OF OPERATIONS	'
Reverse stock split	0.02

CONSOLIDATED_STATEMENT_OF_CASH2

CONSOLIDATED STATEMENT OF CASH FLOWS (USD $)	12 Months Ended		32 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'
Net loss	($83,925)	($66,957)	($168,091)
Adjustments to reconcile net loss to net cash used in operating activities:	'	'	'
Services paid for with securities	4,653	2,064	7,033
Apollo fees paid with promissory note	6,750	'	6,750
Derivative losses	1,900	39,810	56,666
Loss on debt extinguishment	'	2,000	2,000
Stock-based compensation	16,239	9,717	25,957
Interest expense	7,250	1,939	9,309
Karlsson Group Tax Gross Up	6,226	'	6,226
Depreciation	108	5	114
Changes in operating assets and liabilities:	'	'	'
Accounts receivable	-5	-1	-6
Other current assets	163	-686	-665
Deposits	-24	-80	-104
Accounts payable	2,179	70	2,850
Accrued liabilities	3,663	770	4,518
Net cash used in operating activities	-34,823	-11,349	-47,443
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'	'
Mineral properties	-1,599	-1,043	-2,690
Land acquisitions	-380	'	-380
Equipment acquisitions	-639	-81	-726
Net cash used in investing activities	-2,618	-1,124	-3,796
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'
Proceeds from convertible notes	'	5,500	9,049
Merkin note amendment	'	-2,000	-2,000
Karlsson Note principal payments	-9,718	'	-9,718
Proceeds from common stock issued	61,883	17,994	79,932
Non-controlling interest acquisition	-25,000	'	-25,000
Net cash provided by financing activities	27,165	21,494	52,263
Net increase (decrease) in cash and cash equivalents	-10,276	9,021	1,024
Cash and cash equivalents- beginning of period	11,300	2,279	'
Cash and cash equivalents - end of period	1,024	11,300	1,024
Cash paid for interest	0	'	'
Supplemental disclosure of non-cash transactions:	'	'	'
Convertible notes and accrued interest converted into shares of common stock	'	-8,417	-9,493
Common stock attributable to reverse merger	'	'	2
Fair value of land contributed by non-controlling interest	'	'	-11,000
Note receivable in exchange for shares of common stock	'	-1,125	-1,125
Warrants issued and recorded as deferred financing costs	'	-43	-43
Grandhaven Option, net of $25,000 receivable	'	4,036	4,036
SK Land Holdings Option	$500	'	$500

CONSOLIDATED_STATEMENT_OF_CASH3

CONSOLIDATED STATEMENT OF CASH FLOWS (Parenthetical) (USD $)	6 Months Ended		12 Months Ended		38 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2013	Mar. 31, 2012	Sep. 30, 2013
CONSOLIDATED STATEMENT OF CASH FLOWS	'	'	'	'	'
Grandhaven Option, receivable	$25,000	$25,000	$25,000	$25,000	$25,000

CONSOLIDATED_STATEMENT_OF_SHAR2

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (DEFICIT) (USD $)		Total		Common Stock		Additional Paid-in Capital		Losses Accumulated in the Exploration Stage	Non-Controlling Interest
In Thousands, except Share data, unless otherwise specified
Balance at Aug. 04, 2010		'		'		'		'	'
Increase (Decrease) in Shareholders' Equity		'		'		'		'	'
Stock issued in private placements		$54		'		$54		'	'
Stock issued in private placements (in shares)		'		328,273		'		'	'
Stock-based compensation		1		'		1		'	'
Stock-based compensation (in shares)		'		17,000		'		'	'
Contributions		11,000		'		'		'	11,000
Stock issued for services		316		'		316		'	'
Stock issued for services (in shares)		'		42,833		'		'	'
Stock acquired through merger (in shares)		'		34,700		'		'	'
Convertible notes and accrued interest converted into common stock		1,076		'		1,076		'	'
Convertible notes and accrued interest converted into common stock (in shares)		'		7,171		'		'	'
Net loss		-17,209		'		'		-16,834	-375
Balance at Mar. 31, 2011		-4,762		'		1,447		-16,834	10,625
Balance (in shares) at Mar. 31, 2011	[1]	'		429,977		'		'	'
Balance at Aug. 05, 2010		'		'		'		'	'
Increase (Decrease) in Shareholders' Equity		'		'		'		'	'
Stock issued in private placements		54		'		54	[1]	'	'
Stock issued in private placements (in shares)	[1]	'		328,273		'		'	'
Stock-based compensation		1		'		1	[1]	'	'
Stock-based compensation (in shares)	[1]	'		17,000		'		'	'
Contributions		11,000		'		'		'	11,000
Stock issued for services		316		'		316	[1]	'	'
Stock issued for services (in shares)	[1]	'		42,833		'		'	'
Stock acquired through merger (in shares)	[1]	'		34,700		'		'	'
Convertible notes and accrued interest converted into common stock		1,076		'		1,076	[1]	'	'
Convertible notes and accrued interest converted into common stock (in shares)	[1]	'		7,171		'		'	'
Net loss		-17,209		'		'		-16,834	-375
Balance at Mar. 31, 2011		-4,762		'		1,447		-16,834	10,625
Balance (in shares) at Mar. 31, 2011	[1]	'		429,977		'		'	'
Increase (Decrease) in Shareholders' Equity		'		'		'		'	'
Stock issued in private placements		13,972		'		13,972	[1]	'	'
Stock issued in private placements (in shares)	[1]	'		85,552		'		'	'
Stock-based compensation		9,717		'		9,717	[1]	'	'
Stock-based compensation (in shares)	[1]	'		14,000		'		'	'
Stock issued for services		2,061		'		2,061	[1]	'	'
Stock issued for services (in shares)	[1]	'		10,000		'		'	'
Convertible notes and accrued interest converted into common stock		64,800		'		64,800	[1]	'	'
Convertible notes and accrued interest converted into common stock (in shares)	[1]	'		250,254		'		'	'
Net loss		-66,957		'		'		-63,566	-3,391
Balance at Mar. 31, 2012		18,831	[1]	'		91,997		-80,400	7,234
Balance (in shares) at Mar. 31, 2012	[1]	'		789,783		'		'	'
Increase (Decrease) in Shareholders' Equity		'		'		'		'	'
Stock issued in private placements		1,000		'		1,000	[1]	'	'
Stock issued in private placements (in shares)	[1]	'		4,706		'		'	'
Stock-based compensation		16,239		'		16,239	[1]	'	'
Stock-based compensation (in shares)	[1]	'		9,000		'		'	'
Stock issued for services		4,652		'		4,652	[1]	'	'
Stock issued for services (in shares)	[1]	'		40,425		'		'	'
Non-controlling interest acquisition		-182,219		'		-179,056	[1]	'	-3,163
The Karlsson Group warrant issuance		34,620		'		34,620		'	'
Stock issued in public offerings		66,290		1	[1]	66,289	[1]	'	'
Stock issued in public offerings (in shares)	[1]	'		608,000		'		'	'
Cost of public offerings		-5,406		'		-5,406	[1]	'	'
Net loss		-83,925		'		'		-79,854	-4,071
Balance at Mar. 31, 2013		-129,918	[1]	1		30,335		-160,254	'
Balance (in shares) at Mar. 31, 2013	[1]	'		1,451,914		'		'	'
Increase (Decrease) in Shareholders' Equity		'		'		'		'	'
Stock-based compensation		175		'		175	[1]	'	'
Stock issued for services		1,538		'		1,538	[1]	'	'
Stock issued for services (in shares)	[1]	'		230,123		'		'	'
Stock issued in public offerings		805		2	[1]	803	[1]	'	'
Stock issued in public offerings (in shares)	[1]	'		1,575,334		'		'	'
Cost of public offerings		-790		'		-790	[1]	'	'
Net loss		-17,344		'		'		-17,344	'
Balance at Sep. 30, 2013	[1]	($140,264)		'		'		'	'
Balance (in shares) at Sep. 30, 2013	[1]	'		4,174,039		'		'	'
[1]	All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.

CONSOLIDATED_STATEMENT_OF_SHAR3

CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (DEFICIT) (Parenthetical)	0 Months Ended
	Sep. 04, 2013
CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (DEFICIT)	'
Reverse stock split	0.02

Organization_and_Business_Oper2

Organization and Business Operations	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Organization and Business Operations	'	'
Organization and Business Operations	'	'
	Note 1 — Organization and Business Operations	Note 1—Organization and Business Operations
	Prospect Global is an exploration stage company engaged in the exploration of a potash deposit located in the Holbrook Basin of eastern Arizona, which we refer to as the Holbrook Project. We hold our interest in and control the Holbrook Project through our wholly owned subsidiary AWP.	Introduction
	Between January and November 2011, we invested $11.0 million dollars in AWP and the Karlsson Group contributed to AWP its ownership of mineral rights on eight private sections and potash exploration permits on 42 Arizona state sections, comprising a total of approximately 31,000 gross acres in the Holbrook Basin, for a 50% ownership interest in AWP. In July 2011, AWP entered into a Potash Sharing Agreement covering 101 private mineral estate sections and related mineral leases on approximately 62,000 acres adjacent to or in close proximity to AWP’s existing mineral rights.  On August 1, 2012 we purchased the Karlsson Group’s 50% interest in AWP and became the sole owner and operator of AWP.   As of September 30, 2013, we held exploration permits on 38 Arizona State sections and 101 private sections.	Prospect Global Resources Inc., a Nevada corporation (individually or in any combination with its subsidiaries, “Prospect,” the “Company,” “we,” “us,” or “our”), is an exploration stage company engaged in the exploration and development of a potash deposit located in the Holbrook Basin of eastern Arizona, which we refer to as the Holbrook Project.
		We were incorporated in the state of Nevada on July 7, 2008 while our wholly owned subsidiary, Old Prospect Global, was incorporated in the state of Delaware on August 5, 2010. We hold our interest in and control the Holbrook Project through our ownership of our wholly owned subsidiary, American West Potash LLC or AWP.
		Between January and November 2011, we invested $11.0 million dollars in AWP and another party, The Karlsson Group Inc., contributed to AWP its ownership of mineral rights on eight private sections and potash exploration permits on 42 Arizona state sections, comprising a total of approximately 31,000 gross acres in the Holbrook Basin, for a 50% ownership interest in AWP. In July 2011, AWP entered into a Sharing Agreement covering 101 private mineral estate sections and related mineral leases on approximately 62,000 acres adjacent to or in close proximity to AWP’s existing mineral rights.  On August 1, 2012 we purchased The Karlsson Group’s 50% interest in AWP and became the sole owner and operator of AWP.
		American West Potash LLC
		AWP commenced operations on January 21, 2011, the date on which the Company and The Karlsson Group executed the Third Amended and Restated Operating Agreement (the “Operating Agreement”). Through AWP, we hold potash exploration permits on 38 Arizona state sections, own the mineral rights on eight private sections and hold leases for the mineral rights on 101 private sections which, in total, cover approximately 90,000 acres. The state permits are for five year terms, of which 15 expire in 2014 and 23 expire in 2015. The private leases shall continue as long as AWP performs exploration or development activity.
		During calendar year 2011, AWP acquired approximately 70 miles of 2D seismic data and completed the drilling and coring of 12 holes. The results from the seismic data and the drilling helped delineate the potash resource potential on AWP’s acreage and supported the completion of the Resource Calculation and PEA. This was combined with the historic information of approximately 58 holes in our project area. Due to the relatively shallow depth of the deposit, AWP plans to mine the potash employing conventional underground mining techniques.
		On July 27, 2011, AWP entered into a Sharing Agreement covering 101 private mineral estate sections and related mineral leases on approximately 62,000 acres adjacent to or in close proximity to its existing mineral rights covering 50 mineral estate sections in the Holbrook Basin of eastern Arizona. This Sharing Agreement provides that AWP will pay the mineral estate owners specified dollar amounts during development of AWP’s mining and processing facility, an annual base rent and a royalty for potash extracted from these estates. The term of the Sharing Agreement is for perpetuity or until the earliest of cessation of operations by AWP for 180 consecutive days or abandonment of the potash mining operation by AWP. The owners of the mineral estates can also terminate the agreement upon specified defaults by AWP, some following cure periods.
		Change in Fiscal Year End
		On March 20, 2012 the Company’s board of directors resolved to change the Company’s fiscal year end from December 31 to March 31, commencing with the 12 month period ending March 31, 2012.  As a result of this change, the Company filed a transition report on Form 10-K for the three-month transition period ended March 31, 2012. References to any of our fiscal years mean the fiscal year ending March 31 of that calendar year.
		Short-Term Liquidity and Capital Needs
		As of March 31, 2013, we had approximately $1.0 million in cash and a working capital deficit of $144.7 million, including accounts payable and accrued liabilities of $14.6 million and indebtedness of $128.3 million. Subsequent to year-end and as a result of not being able to service this debt, we entered into debt restructurings on April 15, 2013 and June 26, 2013 that extended the due dates of this debt in exchange for certain other considerations and concessions. Refer to Note 18 — Subsequent Events of the accompanying consolidated financial statements for additional information.
		As part of the Second Extension Agreement, we are required to meet the following development milestones:
		(i)       Complete total depth on at least eight wells on or before November 1, 2013,
		(ii)      Deliver a completed and updated final NI 43-101 resource report on or before February 1, 2014,
		(iii)     Deliver completed metallurgical and rock mechanic test work results that will be used to complete the mine and processing plant designs for the definitive feasibility study on or before June 1, 2014, and
		(iv)     Deliver a completed and published definitive feasibility study on or before December 31, 2014.
		In addition, under the terms of the Second Extension Agreement we are required to deposit 50% of the net proceeds of the next $24.0 million of capital we raise (for a total of $12.0 million) into escrow for Holbrook Project expenses. Two million dollars of the proceeds we received from our recent $5.0 million public offering (refer to Note 18—Subsequent Events of the accompanying consolidated financial statements) were placed into this escrow, reducing our remaining escrow obligation to $10.0 million. We are also required to pay 10% of all capital raised going forward to Karlsson and Apollo as payments on their respective promissory notes. If we do not meet any one of the required development milestones, Karlsson will be entitled to foreclose on the collateral securing the Karlsson Note, which could result in a sale of AWP or its assets to satisfy amounts owing on the note. Refer to Note 18—Subsequent Events of the accompanying consolidated financial statements for further information.
		As of July 1, 2013, we had $1.4 million of available cash (excluding the escrowed cash of approximately $2.4 million which must be used for specified purposes related to the Holbrook Project pursuant to the restructured Karlsson Note), which includes the $4.1 million of net proceeds received from the public offering that closed on June 26, 2013. We will need to raise additional capital beyond what has already been raised to complete the development milestones in the Extension Agreement. If we are unable to raise the necessary funds to satisfy these development milestones, we will consider all available options, including the filing of a voluntary bankruptcy.
		The accompanying consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and liquidation of liabilities in the ordinary course of business.
		At March 31, 2013, the Company has not generated any revenues to fund operations.  The continuation of the Company as a going concern is dependent upon the efforts of the Company to raise additional capital and meet operational and corporate requirements. As disclosed within these financial statements, the capital required to meet these requirements could be substantial and will require the issuance of additional debt and/or equity securities.  These requirements and potential lack of available funding raise substantial doubt as to the Company’s ability to continue as a going concern.  The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Summary_of_Significant_Account3

Summary of Significant Accounting Principles	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Summary of Significant Accounting Principles	'	'
Summary of Significant Accounting Principles	'	'
	Note 3—Summary of Significant Accounting Principles	Note 2—Summary of Significant Accounting Principles
	This summary of significant accounting policies of the Company is intended to assist readers in understanding the Company’s financial statements. The financial statements and notes are representations of the Company’s management, which is responsible for their integrity and objectivity.	This summary of significant accounting policies of the Company is presented to assist in understanding the Company’s financial statements. The financial statements and notes are representations of the Company’s management, which is responsible for their integrity and objectivity.
	Basis of Presentation	Basis of Presentation
	The accompanying unaudited Interim Condensed Consolidated Financial Statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), the instructions to Form 10-Q and Article 10 of Regulation S-X. In management’s opinion, all of the normal and recurring adjustments necessary to fairly present the interim financial information set forth herein have been included. The results of operations for interim periods are not necessarily indicative of the operating results of a full year or of future years. These interim financial statements follow the same accounting policies and methods of their application as the most recent annual financial statements unless specifically discussed below. These interim financial statements are unaudited and should be read in conjunction with the Company’s audited financial statements and related footnotes for the year ended March 31, 2013 to be included in the Company’s Annual Report on Form 10-K/A to be filed with the SEC as soon as administratively possible.	The accompanying consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), the instructions to Form 10-K and applicable Articles of Regulation S-X. In the opinion of management, all of the normal and recurring adjustments necessary to fairly present the financial information set forth herein have been included.
	We have incurred net losses totaling $177.6 million since inception and at September 30, 2013 we had a working capital deficit $23.7 million.  These consolidated interim financial statements have been prepared on a going concern basis, which contemplates the realization of assets and settlement of liabilities in the normal course of business for the foreseeable future and do not give effect to any adjustments which would be necessary should the Company be unable to continue as a going concern.	Principles of Consolidation
	Use of Estimates	As of March 31, 2013, the Company was the 100% owner of Prospect Global Resources Inc., a Delaware corporation (“old Prospect Global”).  Old Prospect Global is a holding company and the 100% owner of AWP; and, therefore, the Company accordingly provides the consolidated financial statements for the Company, old Prospect Global and AWP.  The purpose of consolidated financial statements is to present the results of operations and the financial position of the Company and its subsidiaries as if the group were a single company. The Company has disclosed in the financial statements the amount of non-controlling interest attributable to The Karlsson Group (prior to the August 1, 2012 acquisition of the remaining 50% non-controlling interest) and has eliminated all intercompany gains and losses. All intercompany accounts and transactions have been eliminated in the consolidation.
	The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses incurred during the reporting period. The Company bases its estimates on various assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions.	Exploration Stage
	Mineral Properties	As of March 31, 2013, the Company was considered an exploration stage enterprise since none of the Company’s mineral properties had proven or probable reserves as determined under the requirements of SEC Industry Guide No. 7. Further analysis, including additional in-fill drilling and a definitive feasibility study, is required before any portion of the resource, if any, can potentially be upgraded to a proven or probable reserve status pursuant to SEC Industry Guide 7.
	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.	Use of Estimates
	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.	The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses incurred during the reporting period. The Company bases its estimates on various assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions. Significant estimates with regard to the Company’s consolidated financial statements include the fair value of mineral interests contributed by The Karlsson Group; the calculation of certain conversion features of the Company’s secured convertible notes; the embedded derivative liabilities associated with those secured convertible notes and the outstanding warrants issued by the Company (and the associated changes period to period); stock-based compensation; the liability associated with the Grandhaven Option; the fair market value of consideration associated with The Karlsson Group Acquisition and the Karlsson Note Tax Gross-Up (as defined in Note 8—Debt) amount.
	Allocation of Costs	Cash and Cash Equivalents
	From time to time our capital raise activities will result in the issuance of more than one security, such as shares of our common stock and warrants to purchase our common stock.  In these cases, we will allocate the costs of that capital raise between the various securities issued based on the relative fair value of each security issued.	Cash is comprised of cash deposits held at banks.  Cash equivalents are highly liquid investments with original maturities of three months or less.  As of March 31, 2013 and 2012, the Company had no cash equivalents. During the course of our operations, our balance of cash and cash equivalents held in bank accounts may exceed amounts covered by the Federal Deposit Insurance Corporation (FDIC).
	Recent Accounting Pronouncements	Equipment
	The Company has considered recently issued accounting pronouncements and does not believe that such pronouncements are of significance, or potential significance, to the Company.	Equipment is recorded at cost. Depreciation is calculated on the straight-line method over the estimated useful life of the assets. Estimated useful lives of assets currently held range from 2-10 years. The Company’s policy is to review equipment for impairment at least annually.
		Mineral Properties
		The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.
		In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.
		Exploration Expense
		Exploration expense includes geological and geophysical work performed on areas that do not yet have identified resources. These costs are expensed as incurred.
		Financial Instruments
		Prospect’s financial instruments consist of cash and cash equivalents, accounts receivable, notes payable, accounts payable, accrued liabilities, warrants and stock options. We carry cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and notes payable at historical costs; their respective estimated fair values approximate carrying values due to their current nature.
		We do not use derivative financial instruments to hedge exposures to cash flow, market or foreign-currency risks. However, we have in the past entered into certain financial instruments and contracts, such as convertible note financing arrangements and the Karlsson Note that contained embedded derivative features. The convertible note financing arrangements were carried as derivative liabilities, at fair value, in our financial statements until their conversion into common stock on November 22, 2011.
		Income Taxes
		The Company accounts for income taxes using the asset and liability method of accounting for deferred income taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases.
		A valuation allowance is required to the extent it is more-likely-than-not that a deferred tax asset will not be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date.
		The Company also reports taxes based on tax positions that meet a more-likely-than-not standard and that are measured at the amount that is more-likely-than-not to be realized. Differences between financial and tax reporting which do not meet this threshold are required to be recorded as unrecognized tax benefits. The Company classifies penalty and interest expense related to income tax liabilities as an income tax expense. There are no penalties or interest recognized in the statement of operations or accrued on the balance sheet.
		Loss per Share
		Basic loss per share of common stock is calculated by dividing net loss available to common stockholders by the weighted average number of common shares outstanding for the respective period. Diluted loss per common share reflects the potential dilution that would occur if contracts to issue common stock were exercised or converted into common stock. For the 12 months ended March 31, 2013 and 2012 and from August 5, 2010 (Inception) to March 31, 2013, basic loss per common share and diluted loss per common share were the same as any potentially dilutive shares would have been anti-dilutive to the periods. Refer to Note 15—Loss per Share for additional information.
		Equity-Based Compensation
		The Company recognizes compensation costs for share-based awards based on the estimated fair value of the employee awards on their grant date. The fair value of stock options is estimated using the Black-Scholes option pricing model. Compensation costs are recognized on a straight-line basis over each issuance’s respective vesting period.
		From time to time, the Company will issue share-based awards, including options and warrants, to non-employees. The fair value of these awards issued to non-employees (typically consultants) is measured on the earlier of the date the performance is complete or the date the consultant is committed to perform. In the event that the measurement date occurs after an interim reporting date, the awards are measured at their then-current fair value at each interim reporting date, estimated using the Black-Scholes pricing model. The fair value of these awards is expensed on a straight-line basis over the associated performance period.
		Warrants
		The Company classifies its issued and outstanding warrants as liabilities or equity in its financial statements, depending upon the criteria met and specific circumstances at a given point in time. Refer to Note 13—Equity Based Compensation and Note 14—Shareholders’ Equity for additional information.
		Recent Accounting Pronouncements
		The Company has considered recently issued accounting pronouncements and does not believe that such pronouncements are of significance, or potential significance, to the Company.

The_Karlsson_Group_Acquisition

The Karlsson Group Acquisition	12 Months Ended
	Mar. 31, 2013
The Karlsson Group Acquisition	'
The Karlsson Group Acquisition	'
	Note 3—The Karlsson Group Acquisition
	On May 30, 2012, we signed a purchase agreement with The Karlsson Group, Inc. for the acquisition of the 50% of AWP that we did not already own. We subsequently closed this acquisition on August 1, 2012 at which point we became the sole owner and operator of AWP. With the signing of the purchase agreement, we paid The Karlsson Group a non-refundable deposit consisting of (a) $6.0 million in cash, of which $5.5 million was credited against the purchase price, and (b) a warrant to purchase 112,117 shares of our common stock for $212.50 per share. At closing, we (a) paid The Karlsson Group an additional $19.5 million in cash, (b) issued them a senior secured $125.0 million promissory note and (c) granted them the right to receive 1% of the gross sales received by AWP from potash production from the real property over which AWP currently has leases, licenses and permits for mining purposes, capped at $75.0 million. We also agreed to pay The Karlsson Group an additional amount equal to 15% of the net proceeds received from a future sale of at least 50% of AWP or a merger of AWP with or into an unaffiliated entity on or prior to August 1, 2016, capped at $75.0 million.  At the closing, we also received an option, exercisable for 150 days following payment in full of the promissory note, to purchase approximately 5,080 acres in Apache County, Arizona from an affiliate of The Karlsson Group for $250,000.
	At closing, the allocation of the purchase price was recorded as an equity transaction using preliminary estimates related to the fair value of the consideration paid. As of March 31, 2013, we deemed these preliminary estimates to be final and the accounting for this transaction complete.
	On April 15, 2013 and June 26, 2013, as a condition to the restructurings of The Karlsson Group debt incurred in connection with the acquisition, we entered into amended agreements with The Karlsson Group that modified some of the terms of the original acquisition.  Refer to Note 18—Subsequent Events for additional information

Other_Current_Assets1

Other Current Assets	6 Months Ended					12 Months Ended
	Sep. 30, 2013					Mar. 31, 2013
Other Current Assets	'					'
Other Current Assets	'					'
	Note 5 — Other Current Assets					Note 4—Other Current Assets
	As of September 30, 2013 and March 31, 2013, our other current assets related to items such as insurance premiums, service contracts, rental agreements, property deposits and various other operating pre-payments.					In the normal course of business, the Company pays in advance for goods and/or services to be received in the future.  As of March 31, 2013, our prepaid balances related to items such as insurance premiums, service contracts, rental agreements and various other operating pre-payments.  The SK Land Holdings Option was acquired on August 1, 2012 as part of The Karlsson Group Acquisition and represents the estimated fair value of the land option acquired as part of this acquisition.
		September 30, 2013		March 31, 2013		As we expect to receive benefits from these payments within the next 12 months, they have been reflected as current assets on the balance sheet.
		(thousands)		(thousands)
		(unaudited)					March 31, 2013		March 31, 2012
	Prepaid insurance & rent	$	281	$	276		(thousands)		(thousands)
	Land purchase option	—		500		Prepaid insurance & rent	$	276	$	223
	Other	40		395		Other	389		605
	Total other current assets	$	321	$	1,171	SK Land Holdings Option	500		—
						Total other current assets	$	1,165	$	828

Mineral_Properties1

Mineral Properties	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Mineral Properties	'	'
Mineral Properties	'	'
	Note 6—Mineral Properties	Note 5—Mineral Properties
	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties.	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.
	Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.
	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable.
	When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.

Recovered_Sheet1

Off-take Arrangement Fee	12 Months Ended
	Mar. 31, 2013
Off-take Arrangement Fee.	'
Off-take Arrangement Fee	'
	Note 6—Off-take Arrangement Fee
	Off-take Agreement with Sichuan Chemical
	On October 18, 2012, we entered into an agreement with Sichuan Chemical Industry Holding (Group) Co, Ltd, a Chinese limited liability company (“Sichuan”), under which Sichuan will purchase a minimum of 500,000 tonnes (on a take-or-pay basis, backed by a letter of credit) of potash from us per year for a period of ten years starting with the commencement of production from our Holbrook Project.
	Upon execution of the Sichuan agreement, we owed a one-time arrangement fee to a third party of $7.8 million, payable 50% in cash and 50% in common stock with the common stock component totaling 33,125 shares.  As of March 31, 2013, the Company had issued all 33,125 shares of the common stock and paid $2.3 million in cash to the third party.  The remaining $1.6 million is included in accrued liabilities at March 31, 2013.  This off-take arrangement fee was expensed when incurred.  See also Note 19 — Restatement.

Accounts_Payable_and_Accrued_L3

Accounts Payable and Accrued Liabilities	6 Months Ended					12 Months Ended
	Sep. 30, 2013					Mar. 31, 2013
Accounts Payable and Accrued Liabilities	'					'
Accounts Payable and Accrued Liabilities	'					'
	Note 8 — Accounts Payable and Accrued Liabilities					Note 7— Accounts Payable and Accrued Liabilities
	Accounts payable and accrued liabilities at September 30, 2013 and March 31, 2013 were comprised of:					Accrued liabilities at March 31, 2013 and 2012 included:
		September 30, 2013		March 31, 2013			March 31, 2013		March 31, 2012
		(thousands)		(thousands)			(thousands)		(thousands)
		(unaudited)				Drilling/permitting	$	140	$	471
	Drilling/permitting	$	543	$	382	Mineral lease obligations	1,500		—
	Engineering	1,505		1,796		Legal	112		280
	Private leaseholder obligations	—		1,500		Vacation, bonuses and severance pay	982		27
	Legal	664		720		Board of Directors’ fees	125		—
	Board of Directors’ fees	—		125		Off-take arrangement fee	1,588		—
	Off-take arrangement fee	50		1,588		Interest on promissory notes	7,229		—
	Accrued interest	—		7,251		Other	82		66
	Compensation and other	1,866		1,245		Total accrued liabilities	$	11,758	$	844
	Total accounts payable and accrued liabilities	$	4,628	$	14,607
						The $1.5 million mineral lease obligation relates to amounts due various owners of private sections in accordance with the Sharing Agreement.  The off-take arrangement fee is the remainder of a one-time fee due to a third-party consulting group.  The interest on promissory notes is comprised of the interest owing under the Karlsson and Apollo notes, all of which is payable within the next 12 months. Refer to Note 8—Debt and Note 18—Subsequent Events for additional information.
	Drilling/permitting and engineering costs are expensed when incurred and are associated with the Holbrook Project. The accrued interest at March 31, 2013 related to the Karlsson and Apollo notes was moved to non-current liabilities with the restructuring of the respective notes in April 2013.

Debt

Debt

6 Months Ended

12 Months Ended

Sep. 30, 2013

Mar. 31, 2013

Debt

'

'

Debt

'

'

Note 9 — Debt and Tax Compensation on Note Payable

Note 8 — Debt

As of September 30, 2013 our indebtedness was $141.9 million or $152.6 million including the $10.7 million of accrued interest.

Prospect’s debt consists of the following:

September 30, 2013

March 31, 2013

March 31, 2013

March 31, 2012

(thousands)

(thousands)

(thousands)

(thousands)

(unaudited)

Karlsson senior secured note

$

115,282

$

—

Karlsson senior secured note

$

117,472

$

115,282

Apollo unsecured notes

6,750

—

Apollo unsecured notes

6,750

6,750

Tax gross-up on Karlsson senior secured note

6,226

—

Tax compensation on Karlsson senior secured note

17,629

6,226

Total debt

128,258

—

Total debt and tax compensation

141,851

128,258

Less: current portion

(128,258

)

—

Less: Unamortized debt discount*

(26,329

)

—

Total long-term debt

$

—

$

—

Less: current portion of debt and tax compensation

(1,164

)

(128,258

)

Total long-term debt and tax compensation

$

114,358

$

—

Karlsson Note

* Includes gross discount on the Karlsson Note of $34,528, net of amortized discount of $8,199.

We issued The Karlsson Group a $125.0 million senior first priority secured promissory note at the closing of The Karlsson Group Acquisition on August 1, 2012 which bears interest at 9% per annum and which is payable on each principal payment date.  Pursuant to the terms of this note, we made principal payments totaling $9.7 million in November 2012 equal to 40% of the net proceeds received from our November equity offering.  The remaining principal balance of $115.3 million was due to have been repaid in two installments with the balance of the first installment or $40.3 million having been due on March 30, 2013 and the second installment of $75.0 million having a due date of July 31, 2013.  Unable to raise sufficient funds to repay the amounts due under the Karlsson Note on March 30, 2013, we entered into an Extension Agreements with The Karlsson Group on April 15, 2013 and June 26, 2013 that, among other things, extended the due date of the Karlsson Note. Refer to Note 18—Subsequent Events for additional information.

Karlsson Group Senior Secured Note

In addition to the mandatory prepayments equal to 40% of the net proceeds received by the Company from any equity or debt raise completed before the Karlsson Note has been repaid in full, the Karlsson Note is also mandatorily pre-payable within five business days of a sale of at least 50% of AWP or a merger of AWP with or into an unaffiliated entity. The Karlsson Note is guaranteed by AWP and is secured by (a) a pledge by Old Prospect and (b) a lien over all the assets of Old Prospect and AWP.  Certain of these provisions were revised subsequent to year-end by the Extension Agreement.  Refer to Note 18—Subsequent Events for additional information.

We issued the Karlsson Group a $125.0 million senior first priority secured promissory note on August 1, 2012 as partial consideration for the acquisition of their 50% interest in AWP.  We also agreed to compensate the Karlsson Group for increases in certain federal and state income taxes and other tax related matters.  All amounts owing to the Karlsson Group are secured by a lien on all the assets of AWP, a pledge of the capital stock of our subsidiary companies and a payment guarantee from Prospect Global.

Including the tax gross-up (see below), accrued interest and the remaining unpaid principal balance, we owed The Karlsson Group approximately $128.7 million as of March 31, 2013, all of which is reflected in current liabilities at March 31, 2013.

This note bears interest at 9% and is payable quarterly in-kind by an increase to the note’s outstanding principal balance.  Principal and interest are due on the earlier of July 1, 2015 or 12 months following the completion of our Definitive Feasibility Study.

Karlsson Note Tax Gross-Up

The principal balance, accrued interest and compensation for tax matters totaled approximately $145.4 million as of September 30, 2013, of which $1.2 million for tax compensation matters is due on or before November 15, 2013 and is included in current liabilities. If no principal payments are made between now and December 31, 2013 we would owe the Karlsson Group an additional $1.2 million of principal on February 10, 2014.

On December 24, 2012, we also became obligated to pay The Karlsson Group a tax gross-up as compensation for deferring the repayment date of the first Karlsson Note installment from December 24, 2012 to March 30, 2013, with the tax gross-up also payable on March 30, 2013.  We estimated this tax gross-up to be $6.2 million in accordance with the Karlsson Note terms.  However, this amount is subject to adjustment should retrospective tax changes occur prior to payment of this gross-up.  In accordance with accounting guidance related to contingent liabilities, the additional expense associated with the obligation to pay the tax gross-up has been included as a component of loss from operations.  This tax gross provision was subsequently modified and expanded in connection with the Extension Agreement entered into on April 15, 2013.  Refer to Note 18—Subsequent Events for additional information.

We are required to prepay the Karlsson Note with 10% of the gross proceeds from any future capital raises until the Karlsson Note has been paid in full. The Karlsson Note is also mandatorily pre-payable within five business days of a sale of at least 50% of AWP or a merger of AWP with or into an unaffiliated entity.

Karlsson Note Prepayment Option

Debt covenant requirements

Pursuant to the terms of the Karlsson Note, if Prospect had paid $100.0 million of principal on or before December 15, 2012, plus all accrued and unpaid interest, the entire inception date note balance of $125.0 million would have been deemed satisfied (“Prepayment Option”).

We are required to deposit 50% of the net proceeds of the next of $18.8 million of capital we raise (for a total of $9.4 million) into escrow for Holbrook Project expenses. We are also required to pay 20% of all future capital raises to Karlsson and Apollo (10% to each) as payments on their respective promissory notes.  These obligations will reduce the cash available from future capital raises that can be used to fund our on-going operations.

At inception, this Prepayment Option was deemed a derivative asset meeting the definition of a financial instrument and subject to Level 3 measurement.  Accordingly, the Company was required to remeasure the fair value of this financial instrument each reporting period.  The estimated fair value of the Prepayment Option as of August 1, 2012, the inception date, was estimated at $1.9 million. In that we did not exercise our option to pay the $100.0 million on or before December 15, 2012, the fair value of the Prepayment Option was subsequently reduced to $0. This change in the fair value of the Prepayment Option of $1.9 million is included in derivative losses.

We are also required to meet the following development milestones:

Apollo Notes

(i)

Complete total depth on at least eight wells on or before November 1, 2013, (Completed)

On March 7, 2013, we entered into a Termination and Release Agreement with certain affiliates of certain investment funds managed by Apollo Global Management, LLC (which we refer to collectively as the Apollo Parties) that terminated the agreements we entered into with the Apollo Parties in November, 2012 (as amended in December, 2012). These agreements related to a potential financing transaction (the “Apollo Financing”) with the Apollo Parties that we terminated as a result of concerns over our ability to obtain the necessary shareholder approvals needed for the Apollo Financing. The fees related to this transaction are included in G&A.

(ii)

Deliver a completed and updated final NI 43-101 resource report on or before February 1, 2014,

(iii)

Deliver completed metallurgical and rock mechanic test work results that will be used to complete the mine and processing plant designs for the definitive feasibility study on or before June 1, 2014, and

Upon execution of the Termination and Release Agreement (i) we paid the Apollo Parties $0.8 million in cash and issued them two promissory notes (“the Apollo Notes”) totaling approximately $6.8 million as a break up and release payment and (ii) we reimbursed the Apollo Parties for $2.2 million of expenses incurred by them in connection with the Apollo Financing.

(iv)

Deliver a completed and published definitive feasibility study on or before December 31, 2014.

Principal and interest on each Apollo Note is payable in full on September 3, 2013 with each note bearing interest at the rate of 11% annum.  The Apollo Notes are also subject to mandatory prepayments in amounts equal to the lessor of the then outstanding balance and 33% of the net cash proceeds received in any debt or equity offering.

If we do not meet any one of the required development milestones, The Karlsson Group will be entitled to foreclose on the collateral securing the Karlsson Note.

On April 15, 2013 and as a condition to the restructuring of our senior debt to The Karlsson Group (see above), the terms of the Apollo Notes were amended to extend the payment due dates and modify certain other terms.  Refer to Note 18—Subsequent Events for additional information.

Karlsson Note Tax Compensation

We currently estimate the compensation for tax matters to be approximately $17.6 million under the Karlsson debt. This estimate could change based on future changes in tax rates (including increases in effective income tax rates caused by “minimum tax” provisions such as the “Buffett rule” or “flat tax” proposals) and/or future changes in certain interest rates published by the Internal Revenue Service.

If no principal payments are made between now and December 31, 2013, we would owe the Karlsson Group an additional $1.2 million in February 2014.  If no principal payments are made during the calendar year 2014, we would owe the Karlsson Group another $1.2 million in February 2015.  These amounts are not currently reflected in the $17.6 million on the balance sheet.

Apollo Notes

On March 7, 2013, we entered into a Termination and Release Agreement with certain affiliates of certain investment funds managed by Apollo Global Management, LLC (which we refer to collectively as the Apollo Parties) that terminated the agreements we entered into with the Apollo Parties in November 2012 (as amended in December 2012). In connection with the Termination and Release Agreement, we issued the Apollo Parties two promissory notes (“the Apollo Notes”) totaling approximately $6.8 million as partial consideration for the break-up and release. The Apollo Notes were amended on April 15, 2013. The Apollo Notes are unsecured and bear interest at the rate of 11% per annum and mature on the earlier of i) July 1, 2015; ii) 12 months following completion of our Definitive Feasibility Study; or iii) the date the Karlsson Note is paid in full.

We are required to prepay the Apollo Notes with 10% of the gross proceeds from any future capital raises until the notes have been paid in full.  As of September 30, 2013 we owed a total of $7.2 million, of which $0.4 million was for accrued interest.

Convertible_Notes

Convertible Notes	12 Months Ended
	Mar. 31, 2013
Convertible Notes	'
Convertible Notes	'
	Note 9—Convertible Notes
	As of March 31, 2013 and 2012, the Company had no outstanding convertible notes.  While no convertible notes were outstanding at these dates, the Company has issued the following convertible notes in the past, all of which have since been converted into common stock:
	In connection with the reverse merger completed on February 11, 2011, $1.0 million of the Company’s then outstanding convertible notes, which were issued in 2010, converted into 7,171 shares of our common stock.
	Between January and September 2011 the Company issued various secured convertible notes.  On November 22, 2011, these convertible notes and their associated interest were converted into common stock. The following notes were outstanding prior to their conversion on November 22, 2011:
	Secured Convertible Notes
	$2.0 million face value secured convertible note due January 24, 2012
	$0.5 million face value secured convertible note due January 24, 2012
	$2.5 million face value secured convertible note due April 24, 2012
	$1.5 million face value secured convertible note due August 3, 2012
	$1.5 million face value secured convertible note due September 18, 2012
	Accounting for the Secured Convertible Notes
	We evaluated the terms and conditions of the secured convertible notes upon their issuance and while they remained outstanding. Because the economic characteristics and risks of the equity-linked conversion options were not clearly and closely related to a debt-type host, the conversion features required classification and measurement as derivative financial instruments. The other embedded derivative features (down-round protection features, automatic conversion provisions and make whole provisions) were also not considered clearly and closely related to the host debt instruments. These features individually were not afforded the exemption normally available to derivatives indexed to a company’s own stock. Accordingly, our evaluation resulted in the conclusion that these compound derivative financial instruments required bifurcation and liability classification, at fair value. These compound derivative financial instruments consisted of (i) the embedded conversion features and the (ii) down-round protection features.
	Accounting for the Convertible Note Warrants
	Based on the terms and conditions of the convertible notes, we concluded the associated warrants did not meet the criteria for equity classification. Accordingly, our analysis resulted in the conclusion that these warrants required classification as liabilities, measured at fair value both at inception and subsequently.
	The following table reports the allocation of the proceeds from the convertible notes on the financing dates:
	Secured Convertible Notes	Merkin Note			COR Note			Hexagon Note			Avalon Note			Second
		$2.0 million			$0.5 million			$2.5 million			$1.5 million			Hexagon Note
		Face Value			Face Value			Face Value			Face Value			$1.5 million
														Face Value
		(thousands)			(thousands)			(thousands)			(thousands)			(thousands)
	Proceeds	$	(2,000	)	$	(500	)	$	(2,500	)	$	(1,500	)	$	(1,500	)
	Compound embedded derivative	10,068			333			460			708			432
	Warrant derivative liability	—			—			3,954			5,147			2,135
	Day-one derivative loss	(8,068		)	—			(1,914		)	(4,355		)	(1,067		)
	Carrying value	$	—		$	(167	)	$	—		$	—		$	—
	The carrying value of the secured convertible notes at March 31, 2013 and 2012 was nil and nil, respectively.
	Discounts (premiums) on the convertible notes stemmed from (i) the allocation of basis to other instruments issued in the transaction, (ii) fees paid directly to the creditor and (iii) initial recognition at fair value, which were lower than face value. Discounts (premiums) were amortized through charges (credits) to interest expense over the term of the debt agreement. Amortization of debt discounts amounted to $1.6 million during the period from August 5, 2010 (Inception) to March 31, 2013, $1.5 million for the year ended March 31, 2012 and nil for the year ended March 31, 2013.

Derivative_Financial_Instrumen2

Derivative Financial Instruments	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Derivative Financial Instruments	'	'
Derivative Financial Instruments	'	'
	Note 15—Derivative Financial Instruments	Note 10—Derivative Financial Instruments
	As of September 30, 2013, we had recorded a derivative liability of $17.1 million representing the estimated fair value of our outstanding stock warrants which was triggered by our June 26, 2013 capital raise that included full ratchet anti-dilution protection for the new warrants issued during the offering.  We valued these warrants by using the binomial lattice valuation model. With the anti-dilution protection afforded these new warrants, we no longer met the criteria for equity accounting for our warrants and therefore began accounting for all warrants as liabilities. In that our warrants were classified as equity at March 31, 2013, we had no similar liability at that date.  See Note 13 —Warrants.	Derivative Assets
	As of September 30, 2013, we also had an embedded derivative liability of $0.7 million relating to the embedded put option on the redeemable preferred stock held by Buffalo Management. This amount is included in other long-term liabilities on the balance sheet. The holder of this preferred stock may redeem their shares, in whole or in part, at any time following the three year anniversary of the date on which a minimum of 50,000 tonnes of potash has first shipped from our Holbrook Project.  We estimated the value of the derivative liability by using scenario analysis based on various assumptions including: discount rate, preferred stock redemption periods, mine life and potash prices.	As of March 31, 2013 and 2012, we had no derivative assets. However, as discussed in Note 8—Debt, we recorded a $1.9 million derivative asset at the inception of the Karlsson Note on August 1, 2012 related to the Prepayment Option but when we did not exercise that option on or before December 15, 2012, the fair value of the Prepayment Option was subsequently reduced to $0 and a corresponding charge was recorded to derivative losses.
		Derivative Liabilities
		As of March 31, 2013 and 2012, the fair values of the compound embedded derivatives and the warrant derivative liabilities were nil. As discussed in Note 9—Convertible Notes, the secured convertible notes were converted into common stock on November 22, 2011. As a result of the conversions, the compound embedded derivatives were eliminated as they existed because of and derived their values from the convertible notes. Additionally, the warrant derivative liabilities were eliminated. From the inception of the financings through November 22, 2011, the warrants were required to be classified as derivative liabilities due to the down-round protection features, automatic conversion provisions, and the make-whole provisions contained in the secured convertible notes. With the conversion of the secured convertible notes on November 22, 2011, the warrants were no longer required to be carried as derivative liabilities as the provisions and features giving rise to the warrant liabilities were also eliminated. As such, the warrants were reclassified to stockholders’ equity on November 22, 2011.
		The following table summarizes the effects on our loss associated with changes in the fair values of our derivative financial instruments for the year ended March 31, 2012. For information on our $1.9 million derivative loss for the year ended March 31, 2013, please see the preceding section on Derivative Assets above.  No gain (loss) was recognized for the period August 5, 2010 (Inception) through March 31, 2011.
		Our financings giving rise to derivative financial instruments and the income effects:	Year Ended
			March 31, 2012
			(thousands)
		Compound embedded derivatives	$	(23,525	)
		Day-one derivative loss	(7,336		)
		Warrant derivative liabilities	(8,949		)
		Total derivative loss	$	(39,810	)
		Fair Value Considerations
		GAAP establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. As presented in the tables below, this hierarchy consists of three broad levels:
		Level 1 valuations:	Quoted prices in active markets for identical assets and liabilities.
		Level 2 valuations:
			Quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and model-derived valuations whose inputs or significant value drivers are observable.
		Level 3 valuations:	Significant inputs to valuation model are unobservable.
		We classify assets and liabilities measured at fair value in their entirety based on the lowest level of input that is significant to their fair value measurement. We measure all our derivative financial instruments that are required to be measured at fair value on a recurring basis using Level 3 inputs. Level 3 inputs are unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. However, as of March 31, 2013 and 2012 none of our outstanding instruments required fair value measurement.
		The features embedded in the secured convertible notes were combined into one compound embedded derivative that we valued using the income valuation technique using the Monte Carlo valuation model. The Monte Carlo model was believed by our management to be the best available technique for this compound derivative because, in addition to providing for inputs such as trading market values, volatilities and risk free rates, the Monte Carlo model also embodies assumptions that provide for credit risk, interest risk and redemption behaviors (i.e. assumptions market participants exchanging debt-type instruments would also consider). The Monte Carlo model simulates multiple outcomes over the period to maturity using multiple assumption inputs also over the period to maturity. As of March 31, 2013 and 2012, all of our compound embedded derivatives valued using the Monte Carlo model had been eliminated and thus no fair value measurements were required.
		The warrants were valued using a binomial-lattice-based valuation model. The lattice-based valuation technique was utilized because it embodies all of the requisite assumptions (including the underlying price, exercise price, term, volatility, and risk-free interest-rate) that are necessary to fair value these instruments. For forward contracts that contingently require net-cash settlement as the principal means of settlement, we project and discount future cash flows applying probability-weights to multiple possible outcomes. Estimating fair values of derivative financial instruments requires the development of significant and subjective estimates that may, and are likely to, change over the duration of the instrument with related changes in internal and external market factors. In addition, option-based techniques are highly volatile and sensitive to changes in the trading market price of our common stock. Because derivative financial instruments are initially and subsequently carried at fair values, our income will reflect the volatility in these estimate and assumption changes. As of March 31, 2013 and 2012, none of our outstanding warrants required fair value measurement.
		The following table sets forth a reconciliation of changes in the fair value of financial liabilities classified as Level 3 in the fair valued hierarchy:
			Derivative Financial Information
			2013			2012
			(thousands)			(thousands)
		Beginning balance as of period ended March 31	$	—		$	(17,288	)
		Total gains or losses (realized or unrealized):
		Included in earnings	—			(20,956		)
		Warrant issuances	—			(12,396		)
		Warrant reclassification to equity	—			20,228
		Debenture issuances	—			(12,001		)
		Debenture conversions	—			42,413
		Ending balance as of March 31	—			—

Grandhaven_Option

Grandhaven Option	12 Months Ended
	Mar. 31, 2013
Grandhaven Option	'
Grandhaven Option	'
	Note 11—Grandhaven Option
	On November 22, 2011, Prospect completed two transactions with entities related to Hexagon Investments, LLC (refer to Note 12—Related Party Transactions for additional information). As part of the consideration given in those transactions, Prospect must either (a) assign a 1% overriding royalty interest in AWP’s future production revenues or (b) settle the obligation through issuance of the Company’s common shares to a Hexagon related entity, Grandhaven Energy, based on the estimated fair value of a 1% royalty interest at the time of exercise (“Grandhaven Option.”).  To the extent we have not completed the assignment of this 1% royalty interest to Grandhaven Energy by December 31, 2013, Grandhaven Energy can elect to have this obligation settled through the issuance of the Company’s common shares at any time after this date.
	Therefore, upon execution of the transaction, we recognized a non-recurring liability for the fair value of the obligation. In order to establish the fair value of a 1% overriding royalty interest and ultimately our performance obligation, we used the fair value hierarchy established by GAAP. We used the lowest level of input significant to the fair value measurement, measuring the fair value of the obligation using Level 3 inputs.
	Recognizing that the Grandhaven Option derives its value from the fair value of a 1% royalty interest, we used the income approach to estimate the fair value of a 1% royalty interest. The royalty is calculated based upon anticipated gross sales of potash. To calculate the value of the 1% royalty interest at inception, management developed a model to estimate the net present value (NPV) of future gross potash sales. The model probability weighted possible outcomes utilizing varying selling price and production inputs. The discount rate applied throughout the model represented Prospect’s estimated cost of capital.
	Based on the above, the fair value for the Grandhaven Option upon issuance (November 22, 2011) was deemed to be $4.1 million.

Related_Party_Transactions1

Related Party Transactions	6 Months Ended						12 Months Ended
	Sep. 30, 2013						Mar. 31, 2013
Related Party Transactions	'						'
Related Party Transactions	'						'
	Note 11—Related Party Transactions						Note 12—Related Party Transactions
	Quincy Prelude LLC and Buffalo Management LLC						Buffalo Management LLC
	Quincy Prelude LLC owns 100% of the voting interests and 82.5% of the economic interests of Buffalo Management LLC (“Buffalo Management” or “Buffalo”) and has sole voting and dispositive power of the shares of our common stock owned by Buffalo. Buffalo owns 15,000,000 shares of our non-voting preferred stock with a liquidation preference of $15.0 million and 8% annual cumulative dividend. Chad Brownstein, one of our directors and executive vice chairman, is the sole member of Quincy Prelude LLC and has sole voting and dispositive power of the shares of our common stock beneficially owned by Quincy Prelude LLC. Barry Munitz, our chairman, owns a 17.5% non-voting economic interest in Buffalo Management. Together Quincy Prelude and Buffalo Management beneficially own more than 5% of our common stock.						Quincy Prelude LLC, one of our stockholders beneficially owning more than 5% of our common stock, owns 100% of the voting interests and 75% of the economic interests of Buffalo Management LLC (“Buffalo Management”) and has sole voting and dispositive power of the shares of our common stock owned by Buffalo Management. Chad Brownstein, one of our directors and executive vice chairman, is the sole member of Quincy Prelude LLC and has sole voting and dispositive power of the shares of our common stock beneficially owned by Quincy Prelude LLC. Barry Munitz, our chairman, owns a 15% non-voting economic interest in Buffalo Management.
	During the six months ended September 30, 2013 and 2012 and for the period from inception through September 30, 2013, Prospect paid Buffalo approximately nil, $1.1 million and $1.4 million, respectively.  No amounts were outstanding to Buffalo as of September 30, 2013 or 2012.						On August 1, 2012 we entered into a termination of the management services agreement with Buffalo Management.  The management services agreement, which was terminable only by Buffalo Management, provided for fees to Buffalo Management for management services rendered in connection with significant transactions such as acquisitions, dispositions and financings.  Also on August 1, 2012, Chad Brownstein, the principal at Buffalo Management who rendered services to us pursuant to the management services agreement and our non-executive board chairman at the time, became our executive vice chairman.
	Under the Karlsson Extension Agreements, we were required to increase Karlsson’s royalty interest from 1% to 2% without increasing the aggregate amount of royalty interests payable to third parties. In order to achieve this result, we negotiated with Buffalo to reduce our revenue interest to Buffalo from 2% to 1%. On August 14, 2013, we compensated Buffalo for this 1% revenue interest by issuing Buffalo 15.0 million shares of our newly created redeemable preferred stock and warrants to purchase 1,005,283 shares of our common stock at $7.20 per share, expiring on August 13, 2018.  These warrants have full-ratchet anti-dilution protection to $3.50 per share. Due to the full ratchet protection, Buffalo was issued an additional 781,887 warrants in connection with our September 2013 capital raise which was completed at $4.05 per share. The September capital raise also resulted in the re-pricing of the 1,005,283 warrants from $7.20 to $4.05.  Due to the additional warrants being issued as a result of the full ratchet anti-dilution protection, additional expense was incurred for the new warrants.  When this agreement was finalized on August 14, 2013, we recorded a gain of $0.5 million for the change in fair value of the warrants as originally estimated at quarter-ended June 30, 2013.						Pursuant to the termination agreement we: (i) paid Buffalo Management $975,000 in cash and issued them a warrant to purchase 7,043 shares of our common stock for $130.00 per share in satisfaction of the $1.5 million fee payable to Buffalo Management in connection with the acquisition of the 50% of American West Potash that we did not previously own and described above in Note 3—The Karlsson Group Acquisition; (ii) issued Buffalo Management a warrant to purchase 5,366 shares of our common stock for $130.00 per share in connection with services rendered by Buffalo Management in connection with our July, 2012 public offering of 308,000 shares of common stock at $130.00 per share; and (iii) issued Buffalo a warrant to purchase 40,000 shares of our common stock for $130.00 per share in consideration of Buffalo Management’s terminating its right to future transaction fees and the $20,000 monthly consulting fee under the management services agreement.  The fee payable to Buffalo Management equal to 2% of Prospect Global’s annual gross revenues in perpetuity and provided for under Section 2(a) of the management services agreement survived the termination.  On April 15, 2013 and as a condition to the Extension Agreement entered into with The Karlsson Group on this same date, this 2% fee was reduced to 1% in exchange for consideration yet to be determined.  Refer to Note 18—Subsequent Events for additional information.
	For warrants with full ratchet anti-dilution protection, any issuances of common stock (or securities exercisable into common stock) at a price below the exercise price of the warrants results in a reduction in the exercise price of the warrants to the new issuance or strike price and a corresponding increase in the number of warrants issued. For example, if an investor held 300 warrants with an exercise price of $4.00 and we issued new shares of common stock at $3.00 per share, the strike price on the warrants would be reduced to $3.00 and the investor would receive an additional 100 warrants with a $3.00 exercise price.						The warrant to purchase an aggregate of 52,409 shares of our common stock for $130.00 per share that we issued to Buffalo Management on August 1, 2012 is exercisable through July 31, 2017, subject to a two year extension in the event of a change of control of Prospect Global.  The fair value of the warrant issued to Buffalo Management on August 1, 2012 was estimated at $5.2 million using the Black-Scholes pricing model.  Significant inputs included the Company’s stock price, an estimated term of five years, estimated volatility of 177.26%, risk free rate of 0.61% and no dividends.  We also amended our registration rights agreement with Buffalo Management to cover the shares issuable pursuant to the August 1, 2012 warrant.  The amended registration rights agreement provides for demand and piggy-back registration rights, provided that each demand registration is limited to 22,000 shares.
	As of September 30, 2013, Quincy Prelude and Buffalo’s holdings included the following:						During the 12 months ended March 31, 2013 and 2012 and for the period from inception through March 31, 2013, Prospect paid Buffalo Management approximately $1.1 million, $0.3 million and $1.4 million, respectively.  As of March 31, 2013 and 2012, accrued liabilities included nil and twenty-five thousand dollars, respectively, related to amounts owing to Buffalo Management.
	Stock and Warrants	Quantity	Strike Price ($)		Expiration Date		Brownstein Hyatt Farber Schreck, LLP
	Warrants	36,271	187.5		2016
	Warrants	35,410	130		2017		Chad Brownstein, one of our directors and executive vice chairman, is the son of a founding partner of Brownstein Hyatt Farber Schreck, LLP (“Brownstein Hyatt”), which serves as Prospect Global’s principal outside legal counsel. Mr. Brownstein’s father controls 35,563 shares of Prospect Global’s common stock which includes the 15,640 shares issued in May 2013 in lieu of payment for services then owing (see below). During the 12 months ended March 31, 2013 and 2012 and for the period from inception through March 31, 2013, Prospect paid Brownstein Hyatt approximately $3.6 million $0.5 million and $4.3 million, respectively, in legal and lobbying/permitting fees. Approximately $0.8 million and $0.3 million payable to Brownstein Hyatt are included in accrued liabilities and accounts payable as of March 31, 2013 and 2012, respectively. Chad Brownstein does not share in any of these fees.
	Warrants	1,787,171	4.05		2018
	Common Stock	63,763	N/A		N/A		On July 2, 2012, we issued Brownstein Hyatt ten year options to purchase 2,400 shares of our common stock at $130.00 per share as compensation.  In May 2013, we entered into an agreement with Brownstein Hyatt under which Brownstein Hyatt received 15,640 shares of our common stock in lieu of payment for services owing at March 31, 2013 in the amount of $0.2 million.
	Preferred Stock 8% Cumulative	15,000,000	N/A		N/A
	Options*	4,000	130		2022		Hexagon Investments, LLC / Grandhaven Energy, LLC / Very Hungry LLC /Scott Reiman 1991 Trust
	Options*	2,000	212.5		2021
							One of our former board members, Scott Reiman, who served on our board from August 2011 to March 2012, is the founder of Hexagon Investments, LLC (“Hexagon”). Hexagon was not a related party prior to these transactions. The relationship between Hexagon, Grandhaven Energy, Very Hungry and the Scott Reiman 1991 Trust and the details of our transactions with these entities are summarized below:
	*Options held by Chad Brownstein, our Executive Vice Chairman
							·                 On April 25, 2011, we issued a $2.5 million face value secured convertible note in exchange for net proceeds of $2.5 million. The note converted into 17,630 shares of our common stock on November 22, 2011. We also issued Hexagon two warrants to purchase our common stock. The first warrant is exercisable until April 25, 2013 for up to 13,333 of our shares at an exercise price of $150.00 per share. The second warrant is exercisable until April 25, 2014 for up to 50,000 of our shares at an exercise price of $150.00 per share. In connection with issuance of the convertible note we granted piggy-back registration rights to Hexagon for the shares issuable upon conversion of the note and exercise of the warrants.
	Gregory M. Dangler, our interim chief financial officer, performs services from time to time for Buffalo Management, which is permitted by his employment agreement, and is compensated by Buffalo Management for this work.
							·            On September 19, 2011, we issued a $1.5 million convertible secured note in exchange for net proceeds of $1.5 million. This note converted to 7,981 shares of our common stock on November 22, 2011. We also issued Hexagon a warrant to purchase up to 19,608 shares of our common stock at an exercise price of $191.50 per share, which is exercisable until September 18, 2013. In connection with issuance of the convertible note, we granted piggy-back registration rights to Hexagon for the shares issuable upon conversion of the note and exercise of the warrants.
	Brownstein Hyatt Farber Schreck, LLP
							·            On November 22, 2011 we sold 51,765 shares of common stock and a warrant to purchase 51,765 shares of common stock at $212.50 per share for total cash proceeds of $11.0 million to Very Hungry LLC, an affiliate of Hexagon. The warrant is exercisable at any time through August 5, 2013. We granted piggy-back registration rights for the shares purchased and issuable upon exercise of the warrant.
	Chad Brownstein, one of our directors and executive vice chairman, is the son of a founding partner of Brownstein Hyatt Farber Schreck, LLP (“Brownstein Hyatt”), which serves as Prospect Global’s principal outside legal counsel and also provides government relations services to us. Through November 13, 2013, Mr. Brownstein’s father controls 105,998 shares of Prospect Global’s common stock which includes 6,000 issued in July 2011, 15,640 in May 2013, 49,875 in September 2013 and 34,483 issued in October 2013 in lieu of payment for services then owing. Brownstein Hyatt also holds fully vested options to purchase 2,400 shares of our common stock at $130.00 per share, expiring in 2022.
							Also on November 22, 2011 we entered into a royalty agreement with Grandhaven Energy, LLC, an affiliate of Hexagon, whereby we sold Grandhaven an overriding royalty interest of 1% of the gross proceeds received by our subsidiary AWP from the extraction of potash from its existing land holdings for $25,000 cash. If (i) the Arizona State Land Department declines to issue any lease to AWP with respect to any state exploration permit, or (ii) the Arizona State Land Department terminates any state exploration permit, or (iii) the Arizona State Land Department refuses to consent to the assignment of any royalty interests in any Arizona state lease, or requires any reduction of or imposes any condition on such royalty interests as a condition of approving an assignment of such royalty interests or approving any royalty reduction or other action with respect to a state lease, or (iv) if AWP has not been issued all of the state leases and conveyed to Grandhaven all royalty interests in all of AWP’s Arizona state leased premises on or before March 1, 2013, Grandhaven has the option to receive substitute royalty interests from us in the same number of acres in portions of our non-Arizona state properties, in a percentage sufficient to compensate Grandhaven for the reduced royalty interests in the affected state lease. If AWP has not been issued any Arizona state leases as of the date that AWP conveys assignments of the royalty interest in the non-Arizona state properties Grandhaven may elect to receive in substitution an assignment of a 1.388% royalty interest in all of the non-Arizona state leased premises. If we do not deliver assignments of the royalty interest from AWP to Grandhaven by December 31, 2013, Grandhaven has the option, at any time thereafter, to purchase shares of our common stock at $212.50 per share in exchange for the surrender by Grandhaven of royalty interests for which assignments have not been obtained, valued at their fair market value at that time (collectively the “Grandhaven Option”).
	During the six months ended September 30, 2013 and 2012 and for the period from inception through September 30, 2013, Prospect made cash payments to Brownstein Hyatt totaling approximately $1.4 million, $1.7 million and $5.7 million respectively for legal and lobbying/permitting fees. Approximately $0.5 million and $0.8 million payable to Brownstein Hyatt are included in accrued liabilities and accounts payable as of September 30, 2013 and 2012, respectively. Chad Brownstein does not share in any of these fees.
							·            Grandhaven Energy controls Very Hungry LLC.  Conway Schatz, a manager of Very Hungry, joined our board of directors effective April 1, 2012 and currently holds 2,800 options to purchase shares of our common stock at an exercise price of $130.00 per share.  Mr. Schatz does not have dispositive power over the shares owned by Very Hungry.
	Hexagon Investments, LLC and affiliates
							·            On June 7, 2012, Hexagon consummated the contribution of all of its shares of common stock and warrants to purchase common stock to Very Hungry. Subsequent to that transaction, the Scott Reiman 1991 Trust liquidated its membership Interest in Very Hungry and received a pro rata distribution of its interests in Very Hungry, including equity securities of Prospect.
	One of our former board members, Scott Reiman, who served on our board from August 2011 to March 2012, is the founder of Hexagon Investments, LLC (“Hexagon”). Conway Schatz, an employee of Hexagon, became a director in April 2012 and resigned from our board on September 29, 2013. Grandhaven Energy, Very Hungry LLC and the Scott Reiman 1991 Trust are all affiliates of Hexagon.  At September 30, 2013, Hexagon and its affiliates’ holdings consisted of the following:
							·            On July 5, 2012, Very Hungry purchased 96,154 shares of our common stock at $130.00 per share in a public offering for total cash proceeds of $12.5 million.
	Entity	Quantity	Exercise Price			Expiration Date
	Common Stock Held						·            On May 2, 2013, we borrowed $5.0 million from Very Hungry, LLC and the Scott Reiman 1991 Trust in exchange for $5.5 million in unsecured, subordinated promissory notes.  In consideration for this loan, we reduced the exercise price on all warrants to purchase our common stock held by the lenders to $15.00 per share (from exercises prices ranging from $212.50 per share to $150.00 per share) and extended the maturity of all these warrants to August 1, 2017. Very Hungry, LLC and the Scott Reiman 1991 Trust have agreed to invest their $5.5 million subordinated notes in convertible preferred stock that would be automatically convertible upon stockholder approval of the conversion into the same securities issued in the public offering that closed on June 26, 2013. Refer to Note 18—Subsequent Events for additional information.
	Very Hungry LLC	891,112	N/A			N/A
	Scott Reiman Trust	199,086	N/A			N/A	Intercompany Receivables from AWP
	Total Common Stock	1,090,198
	Warrants						The Company paid certain expenses in 2013 and 2012 on behalf of AWP. All intercompany receivables and payables have been eliminated from our consolidated financial statements as of March 31, 2013 and 2012.
	Very Hungry LLC (1)	739,337	$	6		2014
	Very Hungry LLC	96,833	$	15		2017
	Very Hungry LLC (2)	1,095,314	$	4.05		2018
	Scott Reiman Trust (1)	177,331	$	6		2014
	Scott Reiman Trust	37,874	$	15		2017
	Scott Reiman Trust (2)	262,713	$	4.05		2018
	Total Warrants	2,409,402
	Options
	Conway Schatz	2,800	$	130		2014
	(1)   Series B Warrants entitling the holder to purchase for $6.00 per unit one share of our common stock and one Series A Warrant to purchase an additional share of our common stock for $6.00 per share.  If exercised, each Series A Warrant would have full ratchet anti-dilution protection.
	(2)   Warrants have full ratchet anti-dilution protection.
	Grandhaven Energy Royalty Interest
	Grandhaven holds a 1% overriding royalty interest in the gross proceeds received by our subsidiary AWP from the extraction of potash from lands and state exploration permits held by AWP on November 22, 2011. Grandhaven has the option, exercisable at any time, to receive shares of our common stock valued at $212.50 per share in exchange for the fair market value of any royalty interest surrendered (the “Grandhaven Option”).
	In addition, if;
	(i)                         the Arizona State Land Department declines to issue any lease to us with respect to any state exploration permit, or
	(ii)                       the Arizona State Land Department terminates any state exploration permit, or
	(iii)                  the Arizona State Land Department refuses to consent to the assignment of any royalty interests in any Arizona state lease, or requires any reduction of or imposes any condition on such royalty interests as a condition of approving an assignment of such royalty interests or approving any royalty reduction or other action with respect to a state lease,
	then Grandhaven has the option to receive substitute royalty interests from us in the same number of acres in portions of our private mineral leases, in a percentage sufficient to compensate Grandhaven for the reduced royalty interests in the affected state leases.
	If we have not been issued any Arizona state leases as of the date that we convey the assignment of the royalty interest in our private mineral leases, Grandhaven may elect to exchange their royalty in our Arizona state leases for a 1.388% royalty interest in all of our private mineral leases.

Equity_Based_Compensation1

Equity Based Compensation	6 Months Ended									12 Months Ended
	Sep. 30, 2013									Mar. 31, 2013
Equity Based Compensation	'									'
Equity Based Compensation	'									'
	Note 12—Equity Based Compensation									Note 13—Equity Based Compensation
	Stock Options									Stock Options
	As of September 30, 2013, we had the following options outstanding:									Effective August 22, 2011, the Board and the shareholders approved both the 2011 Employee Equity Incentive Plan (“Employee Plan”) and 2011 Director and Consultant Equity Incentive Plan (“Director Plan”). Amendments to increase the allowable shares to be issued under both Plans were approved by shareholders of the Company on August 27, 2012. The amended Employee Plan authorizes the Board, or its designated committee, to issue up to an aggregate of 270,000 shares, of which 177,340 remained available for issuance at March 31, 2013. The amended Director Plan authorizes the Board, or its designated committee, to issue up to an aggregate of 164,000 shares, of which 70,500 remained available for issuance at March 31, 2013. Awards issued under the Plans may include stock options, stock appreciation rights, bonus stock and/or restricted stock. Awards may be settled in cash, stock or a combination thereof, at the discretion of the Board.
	Exercise Price ($)	Outstanding Options		Vested Options		Expiration				Compensation expense for employees is recognized based on the estimated fair value of the awards on their grant date.  The fair value of options issued to non-employees is measured on the earlier of the date the performance is complete or the date the non-employee is committed to perform. In the event the non-employee measurement date occurs after an interim reporting date, the options are measured at their then-current fair value at each interim reporting date.  For both employee and non-employee options, fair value is estimated using the Black-Scholes option pricing model. Compensation expense is recognized on a straight-line basis over each grant’s respective vesting period for employees and service period for non-employees. Key inputs and assumptions used in estimating the fair value include our stock price, the grant price, expected term, volatility and the risk-free rate. Assumptions used in estimating the fair value of awards granted through March 31, 2013 included the following:
	130	87,800		74,467		2022
	130	10,000		10,000		2023				Expected term	5.0 to 9.47 years
	144	6,000		3,000		2022				Volatility*	128.57% to 181.46%	*
	212.5	60,300		60,300		2021				Risk-free rate	0.63% to 2.00%
		164,100		147,767						Dividend yield	—
	We are authorized to issue stock options up to the greater of 1,934,000 or 10% of the Company’s outstanding shares of capital stock pursuant to our approved equity incentive plans.  Subsequent to September 30, 2013, we issued 685,000 options at exercise prices of $2.25 and $2.36.									*   The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.
	Compensation expense for employees is recognized based on the estimated fair value of the awards on their grant date.  The fair value of options issued to non-employees is measured on the earlier of the date the performance is complete or the date the non-employee is committed to perform. In the event the non-employee measurement date occurs after an interim reporting date, the options are measured at their then-current fair value at each interim reporting date.									A summary of stock option activity under the Plans as of March 31, 2013 and changes during the year then ended is presented below.
	Fair value for employee and non-employee options is estimated using the Black-Scholes option pricing model. Compensation expense is recognized on a straight-line basis over each grant’s respective vesting period for employees and service period for non-employees. Key inputs and assumptions used in estimating the fair value include our stock price, the grant price, expected term, volatility and the risk-free rate. Other assumptions used in estimating the fair value of awards granted through September 30, 2013 included the following:									Stock Options	Shares (000)		Weighted-		Aggregate		Weighted-
													Average		Intrinsic		Average
	Remaining Term	8.17 to 9.51 years											Exercise		Value ($000)		Remaining
	Volatility*	113.4% to 181.5%	*										Price				Term (Years)
	Risk-Free Rate	0.04% to 2.43%								Outstanding at March 31, 2012	68		$	212.5	$	19,636	7.69
	Dividend Yield	—								Granted	127		130.66		—		9.01
										Exercised	—		—		—		—
	*        The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.									Forfeited or expired	(9	)	130		—		—
										Outstanding at March 31, 2013	186		160.71		—		9.02
	A summary of stock option activity under the Plans as of September 30, 2013 and changes during the six months then ended is presented below.									Vested at March 31, 2013	132		171.67		—		8.87
	Stock Options	Shares		Weighted-			Aggregate		Weighted-
				Average			Intrinsic		Average	The weighted average grant date fair value of the stock options granted for the 12 months ended March 31, 2013 and 2012 and for the period August 5, 2010 (Inception) through March 31, 2013 was $95.24, $156.77 and $108.43, respectively.  A total of 43,060 stock options have been forfeited since August 5, 2010 (Inception), while none have expired.
				Exercise			Value ($000)		Remaining
				Price					Term (Years)	A summary of the status of the non-vested stock options as of March 31, 2013, and changes during the year ended March 31, 2013 is presented below.
	Outstanding at March 31, 2013	186,160		$	160.71		$	—	9,02
	Granted	2,000		15			—		2.1	Non-vested Stock Options	Shares (000)		Weighted Average
	Exercised	—		—			—		—				Grant Date
	Forfeited or expired	24,060		147.87			—		—				Fair Value
	Outstanding at September 30, 2013	164,100		$	160.83		$	—	8.55	Non-vested at March 31, 2012	20		$	123.48
	Vested at September 30, 2013	147,767		$	163.95		$	—	8.48	Granted	127		95.24
										Vested	(84	)	96.24
	The weighted average grant date fair value of the stock options granted for the six months ended September 30, 2013 and 2012 was $15.00 and $122.50, respectively.									Forfeited	(9	)	123.1
										Non-vested at March 31, 2013	54		99.63
	A summary of the status of the non-vested stock options as of September 30, 2013, and changes during the six months ended September 30, 2013 is presented below.
	Non-vested Stock Options	Shares		Weighted						As of March 31, 2013, there was $2.2 million of total unrecognized compensation expense related to non-vested share based compensation arrangements granted under the Plans. That cost is expected to be recognized over a weighted average period of approximately one year. The total expense for the fair value of vested grants during the 12 months ended March 31, 2013 and 2012 was $10.3 million and $9.7 million, respectively.  For the period August 5, 2010 (Inception) to March 31, 2013 the cumulative expense was $16.9 million.
				Average
				Grant Date						Warrants Issued for Services
				Fair Value
	Non-vested at March 31, 2013	53,883		$	99.63					The Company has issued 97,936 warrants to purchase shares of common stock to non-employees in exchange for services, with exercise prices ranging from $62.50 to $251.00.  For these awards, fair value is estimated using the Black-Scholes pricing model.  Expense is recognized on a straight-line basis over each grant’s respective service period. Key inputs and assumptions used in estimating the fair value include our stock price, the grant price, expected term, volatility and the risk-free rate. Assumptions used in estimating the fair value of awards granted through March 31, 2013 included the following:
	Granted	2,000		2.1
	Vested	(25,550	)	85.8						Expected term	2.0 to 5.0 years
	Forfeited	(14,000	)	130.59						Volatility*	106.22% to 177.26%	*
	Non-vested at September 30, 2013	16,333		$	82.78					Risk-free rate	0.22% to 1.52%
										Dividend yield	—
	As of September 30, 2013, there was $0.4 million of total unrecognized compensation expense related to non-vested share based compensation arrangements granted under the Plans. That cost is expected to be recognized over a weighted average period of less than one year. The total expense for the fair value of vested grants during the six months ended September 30, 2013 and 2012 was $0.2 million and $2.6 million, respectively.
										*           The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.
										The expense recognized within G&A related to these awards amounted to $5.9 million and nil for the 12 months ended March 31, 2013 and 2012 and $5.9 million for the cumulative period ended March 31, 2013.
										The Company is currently committed to issuing an additional 800 warrants for services in the next twelve months under an existing consulting contract. Refer to Note 16—Commitments and Contingencies for additional information.

Shareholders_Equity

Shareholders' Equity	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Shareholders' Equity	'	'
Shareholders' Equity	'	'
	Note 14—Stockholders’ Equity	Note 14—Shareholders’ Equity
	On August 30, 2013, the shareholders of the Company approved a reverse stock split of the Company’s common stock (the “reverse stock split”) at a ratio of 1-for-50. The reverse stock split became effective September 4, 2013. The Company had 114,969,415 shares of common stock issued and outstanding immediately before the reverse stock split and 2,299,388 immediately following the reverse stock split. All share and per share amounts in these financial statements have been retroactively adjusted to reflect the reverse stock split.	On August 30, 2013, the shareholders of the Company approved a reverse stock split of the Company’s common stock (the “reverse stock split”) at a ratio of 1-for-50. The reverse stock split became effective September 4, 2013. All share and per share amounts in these financial statements have been retroactively adjusted to reflect the reverse stock split.
	Common Stock	Common Stock
	The Company is authorized to issue 300,000,000 shares of common stock, with a par value of $0.001 per share, under the terms of the Company’s Amended and Restated Articles of Incorporation. As of September 30, 2013, there were 4,174,039 shares of our common stock issued and outstanding. Subsequent to September 30, 2013, we issued 34,483 shares of common stock to Brownstein in lieu of payments for legal services rendered during the period and 1,500 shares to a third party service provider.	The Company is authorized to issue 300,000,000 shares of common stock, with a par value of $0.001 per share, under the terms of the Company’s Amended and Restated Articles of Incorporation. As of March 31, 2013, there were 1,451,914 shares of our common stock issued and outstanding. In addition, we have commitments to issue another 13,500 shares under an existing service contract. Refer to Note 16—Commitments and Contingencies for additional information.
	Preferred Stock	Preferred Stock
	The Company is authorized to issue 100,000,000 shares of preferred stock, with a par value of $0.001 per share, under the terms of the Company’s Amended and Restated Articles of Incorporation. As of September 30, 2013, we had 15,000,000 shares of redeemable preferred stock issued and outstanding having a liquidation value of $15 million.  This preferred stock is redeemable, non-convertible and non-voting and carries an 8% annual cumulative dividend.  Redemptions of this preferred stock are limited to 10% of our market capitalization at the time of redemption.	The Company is authorized to issue 100,000,000 shares of preferred stock, with a par value of $0.001 per share, under the terms of the Company’s Amended and Restated Articles of Incorporation. As of March 31, 2013, no shares of our preferred stock had been issued.
	Also during the quarter ended September 30, 2013, we issued and redeemed another 5,500,000 shares of our preferred stock having a liquidation value of $5.5 million. This preferred stock was issued to the Very Hungry LLC and the Scott Reiman 1991 Trust, affiliates of ours, in exchange for the redemption of the $5.5 million in convertible notes issued to the these parties in May 2013.  This non-redeemable, mandatorily convertible preferred stock was converted into an aggregate of 916,668 shares of common stock, 916,668 Series A Warrants and 916,668 Series B Warrants, identical to those issued in our June 2013 public offering, on August 30, 2013.  The conversion of this preferred stock represented a debt extinguishment and was accounted for as such.  This extinguishment resulted in the recognition of a $2.1 million loss from the write off of the remaining debt discount that was recorded on issuance of the convertible notes.  This transaction also resulted in a beneficial conversion of $0.7 million, all of which was recorded and amortized through additional paid-in capital during the period.	Investor Warrants
	Both series of preferred stock contain a fundamental change provision allowing the holder to receive the liquidation preference of the preferred stock and accrued dividends on the occurrence of a liquidity event such as a change in control, consolidation or merger.  We deem the value of these options to be minimal.	As part of its fundraising efforts, the Company has issued warrants from time to time to various investors to purchase shares of its common stock. As of March 31, 2013, a total of 313,058 investor warrants had been issued and remained outstanding. The exercise price and remaining exercise period of these warrants range from $150.00 to $212.50 and from 0.1 to 6.2 years, respectively.
		The exercise prices and expiration dates for 134,706 of these warrants were subsequently modified in connection with the $5.0 million Bridge Loan Financing completed on May 2, 2013.  Refer to Note 18—Subsequent Events for additional information.
		Non-Controlling Interest
		The Company included The Karlsson Group’s initial $11.0 million contribution of mineral interests to AWP in non-controlling interest on the balance sheet, net of its share of losses. Through this contribution, The Karlsson Group earned its 50% interest in AWP. The Company earned its initial 50% interest in AWP through its cash contributions of $11.0 million.
		Prior to the closing of The Karlsson Group Acquisition on August 1, 2012, Prospect was the 50% owner of AWP, operated and controlled AWP, and accordingly historically provided consolidated financial statements for Prospect and AWP. As such, the remaining 50% interest in AWP owned by The Karlsson Group was considered a non-controlling interest through the August 1, 2012 acquisition date.
		With the completion of The Karlsson Group Acquisition on August 1, 2012 and in accordance with GAAP that calls for any change in a parent’s ownership of a non-controlling interest to be accounted for as an equity transaction, The Karlsson Group Acquisition was treated as a distribution through equity and accordingly no step-up in basis of the assets acquired occurred.

Loss_per_Share1

Loss per Share	6 Months Ended																12 Months Ended
	Sep. 30, 2013																Mar. 31, 2013
Loss per Share	'																'
Loss per Share	'																'
	Note 16—Loss per Share																Note 15—Loss per Share
	The following sets forth the computation of basic and fully diluted weighted average shares outstanding and loss per share of common stock for the periods indicated (unaudited, in thousands except for per share amounts):																The following sets forth the computation of basic and fully diluted weighted average shares outstanding and loss per share of common stock for the periods indicated:
		Three Months			Three Months			Six Months			Six Months			Cumulative from				Year Ended			Year Ended			Cumulative from
		Ended September			Ended September			Ended September			Ended September			August 5, 2010				March 31,			March 31,			August 5, 2010
		30, 2013			30, 2012			30, 2013			30, 2012			(Inception)				2013			2012			(Inception)
														through										through March
														September										31, 2013
														30, 2013				(thousands, except per share amounts)
		(unaudited)			(unaudited)			(unaudited)			(unaudited)			(unaudited)			Net loss attributable to Prospect Global Resources Inc.	$	(79,854	)	$	(63,566	)	$	(160,254	)
	Numerator																Weighted average number of common shares outstanding — basic	1,155			560			716
	Net loss attributable to Prospect Global Resources Inc.	$	(18,361	)	$	(22,107	)	$	(17,344	)	$	(28,678	)	$	(177,598	)	Dilution effect of restricted stock and warrants	—			—			—
	Undeclared Preferred Stock Dividends	(160		)	—			(160		)	—			(160		)	Weighted average number of common shares outstanding — fully diluted	1,155			560			716
	Net loss applicable to common shares for basic and diluted earnings per share	$	(18,521	)	$	(22,107	)	$	(17,504	)	$	(28,678	)	$	(177,758	)	Loss per share of common stock:
	Denominator																Basic and fully diluted loss per share of common stock	$	(69.14	)	$	(113.51	)	$	(223.82	)
	Weighted average number of common shares outstanding — basic	2,737			1,094			2,124			943			1,169
	Dilution effect of restricted stock and warrants	—			—									—			The Company has issued warrants to purchase shares of our common stock. These warrants, along with outstanding options (described in Note 13—Equity Based Compensation and Note 14—Shareholders’ Equity), were not included in the computation of loss per share above as to do so would have been antidilutive for the periods presented. The potentially dilutive warrants, grants and options totaled 0.6 million shares as of March 31, 2013.
	Weighted average number of common shares outstanding — fully diluted	2,737			1,094			2,124			943			1,169
	Basic and fully diluted loss per share of common stock	$	(6.77	)	$	(20.21	)	$	(8.24	)	$	(30.41	)	$	(152.06	)
	Our outstanding warrants and options (described in Note 12 — Equity Based Compensation, Note 13 — Warrants and Note 14 — Stockholders’ Equity), were not included in the computation of Loss per Share above as to do so would have been antidilutive for the periods presented. These potentially dilutive warrants and options totaled 7,346,907 shares as of September 30, 2013.

Commitments_and_Contingencies1

Commitments and Contingencies	6 Months Ended								12 Months Ended
	Sep. 30, 2013								Mar. 31, 2013
Commitments and Contingencies	'								'
Commitments and Contingencies	'								'
	Note 17—Commitments and Contingencies								Note 16—Commitments and Contingencies
	The Karlsson Group Acquisition								Litigation
	In conjunction with the Karlsson Group Acquisition, we have the following commitments and contingencies:								We have received correspondence from a shareholder who purchased $10 million of shares in our November 2012 public offering asserting a right to rescind the purchase based on violation of securities laws in connection with that offering.  We believe the claim is without merit and are vigorously defending against it.  No litigation has been commenced in this matter. In a letter dated June 14, 2013, the four underwriters in our November 2012 public offering notified us that they received a letter from this stockholder in which the stockholder elected to void its purchase of shares in our November 2012 public offering. Pursuant to the terms of the underwriting agreement we entered into with the underwriters in our November 2012 public offering, the underwriters requested that we appoint counsel for the underwriters to advise on this matter, subject to their determination that counsel is satisfactory, or, alternatively, we may authorize the underwriters to employ counsel at our expense.
	a)      we are required to pay the Karlsson Group 2% of gross potash sales from any of our current or future acquired leases, licenses and permits,								In the normal course of operations, Prospect and its subsidiaries may be subject to litigation. As of March 31, 2013, there were no material litigation matters. The Company holds various insurance policies in an attempt to protect it and investors.
	b)      in the event of a sale, directly or indirectly, of at least 50% of AWP or a merger of AWP with or into an unaffiliated entity on or prior to February 1, 2018, the Karlsson Group is entitled to15% of the net proceeds received from the transaction, capped at $75.0 million.								The Karlsson Group Acquisition
	c)       in the event of any equity or debt offering completed by the Company while the Karlsson Note remain outstanding, we must place 50% of the net proceeds of the next $18.8 million of capital raised into escrow (for a total of $9.4 million), which funds may be used for Holbrook Project expenses.								The execution of The Karlsson Group Acquisition agreements (and subsequent amendments thereto in April and June 2013, refer to Note 18—Subsequent Events) subjected the Company to various commitments and contingencies, including:
	d)      in the event of any equity or debt offering completed by the Company while the Karlsson Note remain outstanding, we must pay the Karlsson Group 10% of the gross proceeds raised as a prepayment of the outstanding balance.								a)       We granted The Karlsson Group the future right to receive payments equal to 2% of the gross sales received by us from potash production from any property over which we currently have leases, licenses and permits or which AWP may hereafter acquire.
	e)       We have agreed to compensate the Karlsson Group for any incremental income tax liabilities attributable to an increase in federal or state income tax rates over the tax rates that were in effect for 2012, such that they are made whole with respect to any such increase in tax liabilities. We also agreed to compensate the Karlsson Group for certain interest charges imposed on the deferred tax liabilities as a result of the application the “installment sale” rules of the Internal Revenue Code.								b)       In the event of a sale of at least 50% of AWP or a merger of AWP with or into an unaffiliated entity on or prior to February 1, 2018, we agreed to pay The Karlsson Group an additional payment equal to 15% of the net proceeds received from the transaction, capped at $75.0 million (a “Supplemental Payment”).
	Royalties								c)        The Karlsson Group will recognize taxable gain on principal payments that it receives under the Karlsson Note.  We agreed to compensate The Karlsson Group for any incremental income tax liabilities attributable to an increase in federal or state income tax rates over the tax rates that were in effect for 2012, such that the Karlsson Group is made whole with respect to any such increase in tax liabilities.  We also agreed to compensate The Karlsson Group for certain interest charges imposed on the deferred tax liabilities as a result of the application the “installment sale” rules of the Internal Revenue Code.  Based on current tax and interest rates, the combined cost of these “gross-up” payments would be approximately $26.3 million.  However, this is an estimate only, and the amount of the tax gross-up payments is subject to change based on future tax rate changes and/or changes in certain interest rates published by the Internal Revenue Service.
	In addition to the 2% royalty to the Karlsson Group, we have the following royalty or revenue interest commitments once we have production from our Holbrook Project:								d)       We are required to meet the following development milestones: (i) complete total depth on at least eight wells on or before November 1, 2013, (ii) deliver a completed and updated final NI 43-101 resource report on or before February 1, 2014, (iii) deliver completed metallurgical and rock mechanic test work results that will be used to complete the mine and processing plant designs for the definitive feasibility study on or before June 1, 2014 and (iv) deliver a completed and published definitive feasibility study on or before December 31, 2014.  We will need to raise additional capital beyond what has already been raised to complete these development milestones. If we are unable to raise the necessary funds to satisfy these development milestones, The Karlsson Group could declare us to be in default, causing all of our then outstanding debt to be immediately due and payable and allowing The Karlsson Group to foreclose on their collateral.. Refer to Note 18—Subsequent Events for additional information.
	·          1% revenue interest to Buffalo Management;								The Apollo Notes
	·          1% royalty interest to Grandhaven;
	·          Royalties of a sliding scale nature on gross sales from our private mineral estate sections;								In the event of any equity or debt offering completed by the Company while the Apollo Notes remain outstanding, we have agreed to pay Apollo 10% of the gross proceeds raised (following the first $10.0 million of capital raised) as a prepayment of the outstanding principal.
	·          Royalties of a sliding scale nature on gross sales from our Arizona state sections, although no formal agreement has been made at his time.
									Buffalo Management Royalty Amendment
	Major Contractual Obligations
									In connection with restructuring the Karlsson senior debt, we were required to increase Karlsson’s royalty interest from 1% to 2% without increasing the aggregate amount of royalty interests payable to third parties in the aggregate. In order to achieve this result, we negotiated with Buffalo Management, or Buffalo, to reduce our royalty payable to Buffalo from 2% to 1%. We agreed to compensate Buffalo for this royalty reduction by giving Buffalo either, or a combination of, at its election, (i) equity securities (that may include common stock, preferred stock or warrants for common stock as mutually agreed) equal in value to the determined fair market value of the royalty surrendered or (ii) preferred stock that is redeemable after we commence receiving revenues from the Holbrook Project for the determined fair market value plus accrued interest; provided that no securities shall be issued to Buffalo prior to July 1, 2013 and provided further that in no event will any equity securities or securities convertible into equity securities issued to Buffalo (x) exceed 10% of our outstanding capital stock or (y) be redeemable for aggregate consideration exceeding 10% of our equity market capitalization. To value the surrendered royalty we agreed to engage a third party valuation firm reasonably satisfactory to Buffalo.
	(amounts in thousands)	Less than 1-year		1-2 years		Thereafter	Total
									Common Stock and Warrant Commitments
	Debt obligations*	2,328	*	166,805	*	—	169,133	*
	Land and lease payment**	363		609		729	1,701		As of March 31, 2013, the Company had commitments to issue an additional 13,500 shares of our common stock and 1,600 warrants to purchase shares of our common stock in exchange for services under existing consulting contracts.  The 13,500 shares of common stock are due in quarterly increments of 1,500 shares each, with the next increment being due on April 5, 2013.  The 1,600 warrants are due in monthly tranches of 200 immediately exercisable warrants, with each such warrant tranche having a five year duration and a strike price equal to the most recent sales price of our common stock as reported on Nasdaq.  The due date for the next warrant tranche is April 1, 2013. As of the July 1, 2013, these commitments had been reduced to 1,200 shares of our common stock and 800 warrants to purchase shares of our common stock.
	*Amounts include estimates of future interest and tax compensation to be incurred between now and the debt’s maturity.
	**Amounts may change in the future as mineral leases are converted to mining leases.
	The Apollo Notes
	In the event of any equity or debt offering completed by the Company while the Apollo Notes remain outstanding, we have agreed to pay Apollo 10% of the gross proceeds raised as a prepayment of the outstanding principal.
	Common Stock and Warrant Commitments
	As of September 30, 2013, the Company had commitments to issue an additional 10,500 shares of our common stock and 400 warrants to purchase shares of our common stock in exchange for services under existing consulting contracts.  The 10,500 shares of common stock are due in quarterly increments of 1,500 shares each. We issued 1,500 shares subsequent to quarter end on October 5, 2013. The 400 warrants are due in monthly tranches of 200 immediately exercisable warrants, with each such warrant tranche having a five year term and a strike price equal to the most recent sales price of our common stock as reported on Nasdaq.  We issued the remaining 400 warrants subsequent to quarter end on October 1, 2013 and November 1, 2013 at strike prices of $3.06 and $2.34, respectively.
	As part of our June 26, 2013 public offering, the participating investors received 856,798 Series B Warrants with each Series B Warrant entitling the holder thereof to purchase one additional share of our common stock and one additional warrant in exchange for $6.00 per Series B Warrant.  As of September 30, 2013, 114,798 of these Series B Warrants remained outstanding, all of which expired on November 1, 2013.
	In September 2013, we issued the Very Hungry Parties 916,668 Series B Warrants with each Series B Warrant entitling the holder thereof the right to purchase one additional share of our common stock and one additional warrant in exchange for $6.00 per Series B Warrant. As of September 30, 2013, all 916,668 of these Series B Warrants remained outstanding.  These Series B Warrants expire on January 9, 2014.  If exercised, each B Series warrant would result in the immediate issuance of one additional share of our common stock and one immediately exercisable Series A Warrant having an initial exercise price of 6.00 per share and expiration date five years from the date of issuance.
	As of September 30, 2013, we had 3,936,677 Series A Warrants outstanding having full ratchet anti-dilution protection rights and another 1,787,171 warrants containing full ratchet protection rights to $3.50 per share.  In connection with our September 2013 capital raise completed at $4.05 per share, these full ratchet provisions resulted in the issuance of 1,650,348 new warrants having a strike price of $4.05 and expiration date five years from the issuance date.  It also lowered the strike price to $4.05 (from $6.00 and 7.20) on another 1,862,081 warrants. Additional expense was recognized for the additional full ratchet warrants that were issued on September 26, 2013, all of which were marked to market at the end of the quarter.
	For warrants with full ratchet anti-dilution protection, any issuances of common stock (or securities exercisable into common stock) at a price below the exercise price of the warrants results in a reduction in the exercise price of the warrants to the new issuance or strike price and a corresponding increase in the number of warrants issued. For example, if an investor held 300 warrants with an exercise price of $4.00 and we issued new shares of common stock at $3.00 per share, the strike price on the warrants would be reduced to $3.00 and the investor would receive an additional 100 warrants with a $3.00 exercise price.
	Litigation
	On April 26, 2013, we received correspondence from a stockholder who purchased $10.0 million of shares in our November 2012 public offering asserting a right to rescind the purchase based on violation of securities laws in connection with that offering.  In a related letter dated June 14, 2013, the four underwriters in our November 2012 public offering notified us that they received a letter from the same stockholder in which the stockholder sought to void its purchase of shares in our November 2012 public offering. Pursuant to the terms of the underwriting agreement we entered into with the underwriters in our November 2012 public offering, we could be required to appoint counsel for the underwriters to advise on this matter, subject to their determination that counsel is satisfactory, or, alternatively, we could be required to authorize the underwriters to employ counsel at our expense. We believe the claim is without merit and intend to vigorously defend against it.  No litigation has been commenced in this matter.
	In the normal course of operations, Prospect and its subsidiaries may be subject to litigation. As of September 30, 2013, there were no material litigation matters. The Company holds various insurance policies in an attempt to protect it and investors.

Income_Taxes

Income Taxes	12 Months Ended
	Mar. 31, 2013
Income Taxes	'
Income Taxes	'
	Note 17—Income Taxes
	The components of income/(loss) from continuing operations before income taxes were as follows:
		Year Ended			Year Ended
		March 31, 2013			March 31, 2012
		(thousands)			(thousands)
	United States	$	(79,854	)	$	(63,566	)
	Total	$	(79,854	)	$	(63,566	)
	A summary of the components of the net deferred tax assets and liabilities as of March 31, 2013 and 2012 is as follows:
		Year Ended			Year Ended
		March 31, 2013			March 31, 2012
		(thousands)
	Current deferred tax assets
	Charitable contributions	$	3		$	—
	Accrued bonuses	170			—
	Accrued severance	138			—
	Accrued expenses	4			10
	Total current deferred tax assets	$	315		$	10
	Non-current deferred tax assets
	Investment in AWP	$	—		$	1,085
	Operating loss carry forward	20,493			3,321
	Start-up costs	100			107
	Stock compensation	7,247			3,505
	Warrant expense	2,161			—
	Mineral properties	52,625			—
	Exploration	5,892			—
	Total non-current deferred tax assets	$	88,518		$	8,018
	Valuation allowances	$	(88,505	)	$	(7,956	)
	Total deferred tax assets	$	328		$	72
	Current deferred tax liabilities
	Prepaid expenses	$	(226	)	$	(60	)
	Total current deferred tax liabilities	$	(226	)	$	(60	)
	Non-current deferred tax liabilities
	Fixed assets	(102		)	(12		)
	Total non-current deferred tax liabilities	$	(102	)	$	(12	)
	Total deferred tax liability	(328		)	(72		)
	Net deferred income tax assets (liabilities)	$	—		$	—
	Based upon the level of taxable income (loss) and projections of future taxable income (loss) over the periods in which the deferred tax assets are deductible, management believes it is more likely than not that the Company will not realize the benefits of these deductible differences, and thus has recorded a valuation allowance against the net deferred tax asset balance of $88.5 million. If we are profitable for a number of years and our prospects for the realization of our deferred tax assets are more likely than not, we will then reverse our valuation allowance and credit income tax expense.
	At March 31, 2013 the Company had $56.5 million of federal net operating loss carryforwards in the United States which expire at various dates through March 31, 2033. Valuation allowances have been recorded on net operating loss carryforwards where the Company believes it is more likely than not that the net operating loss will not be realized. The Company will monitor the need for a valuation allowance on an ongoing basis and will make the appropriate adjustments as necessary should circumstances change.
	The Company believes that there is no uncertainty for any income tax position. Therefore, the Company did not reserve an amount for unrecognized tax benefits. Tax years remaining subject to examination include the calendar years 2010 and 2011, the period January 1, 2012 to March 31, 2012 and the fiscal year ended March 31, 2013.
	The components of the consolidated income tax benefit (provision) from continuing operations were as follows:
		Year Ended			Year Ended
		March 31, 2013			March 31, 2012
		(thousands)			(thousands)
	Current portion of income tax expense (benefit)
	U.S. federal	$	—		$	—
	U.S. state	—			—
	Deferred portion of income tax expense (benefit)
	U.S. federal	—			—
	U.S. state	—			—
	Total income tax expense (benefit)	$	—		$	—
	A reconciliation of the actual income tax benefit (provision) and the tax computed by applying the U.S. federal rate (35%) to the loss before income taxes is as follows:
		Year Ended			Year Ended
		March 31, 2013			March 31, 2012
		(thousands)			(thousands)
	Tax benefit from continuing operations	$	(29,374	)	$	(2,214	)
	State tax benefit from continuing operations	(1,008		)	(63		)
	Non-deductible expenses	384			168
	Derivative expense	665			—
	Change in valuation allowance	80,549			1,765
	Non-controlling interest	1,475			247
	AWP step-up	(52,625		)	—
	Other	(66		)	(97		)
	Total income tax expense (benefit)	$	—		$	—

Subsequent_Events1

Subsequent Events	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Subsequent Events	'	'
Subsequent Events	'	'
	Note 19—Subsequent Events	Note 18—Subsequent Events
	Changes to our Board of Directors	Debt Restructuring
	On September 30, 2013 the Company’s board of directors appointed Reed Dickens and Daniel J. Neumann to its board of directors. On September 29, 2013, Conway Schatz resigned from the Company’s board of directors.  On October 1, 2013, Marc Holtzman and Zhi Zhong Qiu also resigned from the Company’s board of directors. Mr. Schatz’s, Mr. Holtzman’s and Mr. Qiu’s resignations were not due to any disagreement with the Company on any matter related to the Company’s operations, policies or practices. Mr. Holtzman and Mr. Qiu joined the Company’s international advisory board alongside Gov. Gray Davis and Devon Archer.	On April 15, 2013 and June 26, 2013 we entered into Extension Agreements with The Karlsson Group which restructured the senior first priority secured promissory note (the “Karlsson Note”) that we issued to The Karlsson Group on August 1, 2012 in connection with our purchase of Karlsson’s 50% interest in AWP (the “Initial KG Transaction”).  In connection with the First Extension Agreement, we amended some of the related documents, including the Karlsson Note (the “Karlsson Note Amendment”), and restructured the two promissory notes issued to affiliates of Apollo Global Management, LLC (“Apollo”) on March 7, 2013 in the aggregate principal amount of $6.8 million (the “Apollo Notes”).
	Nasdaq delisting notice and appeal	The First Karlsson Note Amendment requires us to make future tax “gross-up” payments to The Karlsson Group to compensate them for increases in federal and state income taxes and other tax related matters .We currently estimate the cost of these tax “gross-up” payments to be approximately $26.3 million ($20.1 million if you include the tax gross-up payments owing prior to the Amendment date); however, the tax gross-up payments are subject to change based on future changes in tax rates (including increases in effective income tax rates caused by “minimum tax” provisions such as the “Buffett rule” or “flat tax” proposals) and/or future changes in certain interest rates published by the Internal Revenue Service.
	On April 25, 2013, we received written notification from The Nasdaq Stock Market that we were no longer in compliance with Nasdaq Listing Rule 5550(b)(2) because the market value of our listed securities had fallen below the $35 million minimum requirement for continued listing on the Nasdaq Capital Market for a period of at least 30 consecutive business days. Under Nasdaq Listing Rule 5810(c)(3)(C), we had 180 calendar days to regain compliance. Compliance can be achieved by meeting the $35 million minimum requirement for market value of listed securities for a minimum of 10 consecutive business days during the 180-day compliance period.  On October 23, 2013 we received written notification from The Nasdaq Stock Market that we had not regained compliance during that period and that our common stock would be delisted at the open of business on November 1, 2013.	Karlsson Note Amendments
	We have appealed the delisting action to the Nasdaq Hearing Panel and appeared at a hearing on December 11, 2013. A hearing request stays the delisting pending the Panel’s decision, and our common stock will continue to be listed on The Nasdaq Stock Market during this time.  If our appeal is unsuccessful we intend to takes the necessary steps to have our common stock quoted on the OTC Bulletin or in the “Pink Sheets.”	Under the First Karlsson Note Amendment, the maturity date was extended to the earlier of (i) 12 months following completion of a DFS and (ii) July 1, 2015.  An interim principal payment of $30.0 million is due on the earlier of (i) six months following completion of a DFS and (ii) January 2, 2015 (the “First Payment Date”). Prior to the First Karlsson Note Amendment, we were required to prepay the Karlsson Note with 40% of the net proceeds of any capital raised, whereas we are now required to prepay the Karlsson Note with 10% of the gross proceeds of any capital raised following the first $10.0 million of capital raised.  Under the First Karlsson Note Amendment, the annual interest rate of 9% changed from simple to compounding and is now payable quarterly in kind by automatically increasing the principal balance of the Karlsson Note.
		Under the First Karlsson Note Amendment, we are generally restricted from incurring debt other than Approved Subordinated Debt, which is defined as debt that (i) is unsecured, (ii) is subordinate to the Karlsson Note and (iii) may be convertible to equity if issued on or prior to September 10, 2013. We were also required to meet the following capital raising milestones: (i) $5.0 million by May 15, 2013, which was satisfied by the Very Hungry Parties’ $5.0 million subordinated loan (see below), (ii) an additional $7.0 million by June 17, 2013, of which all or any portion may be raised as Approved Subordinated Debt, (iii) an additional $18.0 million by September 10, 2013, of which all or any portion may be raised as Approved Subordinated Debt, and (iv) an additional $25.0 million no later than August 1, 2014, of which no more than $15.0 million may be raised as Approved Subordinated Debt. We were also required to deposit $9.2 million of the first $30.0 million of capital we raise into escrow, which funds may be released solely to fund specified development expenses for our potash project in the Holbrook Basin. Additionally, we were allowed to incur up to $10.0 million in additional Approved Subordinated Debt prior to the First Payment Date, but may incur no more than $1.0 million of debt after the First Payment Date.
		Prior to the First Karlsson Note Amendment, we had 15 days to cure a payment default and 30 days to cure any non-payment default after, in each case, receiving notice thereof. Under the First Karlsson Note Amendment, there are no notices or cure rights for any payment defaults or any defaults related to the financing milestones or escrow funding described above, or cross-defaults with other agreements. The majority of other non-monetary defaults now have a ten day notice and cure period.
		Under the First Karlsson Note Amendment, Karlsson may assign the Karlsson Note and any of the other Karlsson related documents following the earlier of (i) September 10, 2013, (ii) an event of default under the Karlsson Note, and (iii) once we have raised at least $30.0 million of capital.
		The First Extension Agreement contains customary lender releases and indemnification language.
		Consideration to Karlsson for First Extension Agreement
		In addition to changing the interest rate under the Karlsson Note from simple to compounding and payment of the tax gross-up amounts described above, as consideration to The Karlsson Group for entering into the First Extension Agreement and the related documents, we among other things, (i) increased The Karlsson Group’s royalty interest from 1% to 2% (Buffalo Management LLC has decreased its royalty interest from 2% to 1%  as described below) and eliminated the $75.0 million cap on The Karlsson Group’s previous 1% royalty interest, (ii) decreased the exercise price on The Karlsson Group’s warrants to purchase up to 112,117 shares of our common stock from $212.50 to $12.50 and allowed all of The Karlsson Group’s warrants to be exercisable on a cashless basis, (iii) provided Karlsson with an enhanced collateral package, including a parent guaranty from us and a pledge by us of 100% of the shares of our wholly owned subsidiary Prospect Global Resources Inc, a Delaware corporation and the owner of 100% of American West Potash LLC, (iv) extended the term of Karlsson’s right to receive 15% of the net proceeds from the sale of the Company by one year to August 1, 2017, and (v) agreed to pay Karlsson $275,000 for its attorneys’ fees and costs associated with consummation of the Extension Agreement and related agreements.
		Karlsson Second Extension Agreement
		On June 26, 2013, we entered into the Second Extension Agreement with The Karlsson Group which further restructured the Karlsson Note and related documents.
		Under this amendment, the interim principal payment of $30.0 million that was due on the earlier of (i) six months following completion of a definitive feasibility study and (ii) January 2, 2015 has been eliminated. We are also required to place 50% of the net proceeds of the next $24.0 million of capital we raise (for a total of $12.0 million) into escrow for Holbrook Project expenses. Two million dollars of the proceeds we received from our recent $5.0 million public offering (see below) were placed into this escrow, reducing our remaining escrow obligation to $10.0 million.
		We are also required to meet the following development milestones: (i) complete total depth on at least eight wells on or before November 1, 2013, (ii) deliver a completed and updated final NI 43-101 resource report on or before February 1, 2014, (iii) deliver completed metallurgical and rock mechanic test work results that will be used to complete the mine and processing plant designs for the definitive feasibility study on or before June 1, 2014 and (iv) deliver a completed and published definitive feasibility study on or before December 31, 2014.
		With this amendment, Karlsson may assign the Karlsson Note at any time to any person; previously it was assignable following the earlier of (i) September 10, 2013, (ii) an event of default under the Karlsson Note, and (iii) once we have raised at least $30.0 million of capital and there were restrictions on assignees. We also extended the term of Karlsson’s right to receive 15% of the net proceeds from the sale of the Company by six months to February 1, 2018.
		The Second Extension Agreement contains customary lender releases and indemnification language.
		Consideration to Karlsson for Second Extension Agreement
		With this amendment, we issued Karlsson a five year warrant to purchase 60,000 of our common shares at $6.00 per share and amended our registration rights agreement with Karlsson to include the shares issuable upon exercise of the new warrant. The warrant may be exercised on a cashless basis. We also reimbursed Karlsson $125,000 for its legal fees and expenses.
		Apollo Note Amendments
		Simultaneously with the execution of the First Extension Agreement and related documents, we agreed with Apollo to amend the Apollo Notes by extending the maturity dates from September 3, 2013 to the maturity date of the Karlsson Note (see above). The amendments also reduced our prepayment obligations from 33% of the net proceeds of any capital raised to 10% of the gross proceeds of any capital raised following our first $10.0 million of capital raised.
		Buffalo Management Royalty Amendment
		Simultaneously with the execution of the Extension Agreement and related documents, Buffalo Management agreed to a reduction in its royalty interest in us from 2% to 1%. In exchange for this reduction, we agreed to compensate Buffalo by giving Buffalo either, or a combination of, at its election, (i) equity securities (that may include common stock, preferred stock or warrants for common stock as mutually agreed) equal in value to the determined fair market value of the royalty surrendered or (ii) preferred stock that is redeemable after we commence receiving revenues from the Holbrook Project for the determined fair market value plus accrued interest; provided that no securities shall be issued to Buffalo prior to July 1, 2013 and provided further that in no event will any equity securities or securities convertible into equity securities issued to Buffalo (x) exceed 10% of our outstanding capital stock or (y) be redeemable for aggregate consideration exceeding 10% of our equity market capitalization. To value the surrendered royalty, we agreed to engage a third party valuation firm reasonably satisfactory to Buffalo. Buffalo is controlled by Chad Brownstein, our executive vice-chairman. Barry Munitz, our board chair owns a minority, non-voting interests in Buffalo. Our board has designated a committee composed of Ari Swiller and Conway Schatz to finalize these negotiations with Buffalo Management, neither of whom have any personal or economic interest in Buffalo.
		Nasdaq Notice of Listing Non-compliances
		On April 23, 2013, we received written notification from The Nasdaq Stock Market that for the last 30 consecutive business days, the bid price of our common stock had closed below the minimum $1.00 per share requirement for continued inclusion on the Nasdaq Capital Market based on Listing Rule 5550(a)(1).  We have 180 calendar days, or until September 20, 2013, to regain compliance with this rule. On April 25, 2013, we received a second written notification from The Nasdaq Stock Market that we are no longer in compliance with Nasdaq Listing Rule 5550(b)(2) because the market value of our listed securities has fallen below the $35 million minimum requirement for continued listing on the Nasdaq Capital Market for a period of at least 30 consecutive business days. We have 180 calendar days, or until September 22, 2013, to regain compliance. While we are considering available options to regain compliance with these Nasdaq rules, there can be no assurance that we will be able to do so, which would likely result in our common stock being delisted from the Nasdaq Capital Market. Delisting of our common stock from the Nasdaq Capital Market could substantially reduce the liquidity of your investment in our common stock.
		Receipt of $5.0 million Debt Financing
		On May 2, 2013 (and as further modified on May 22, 2013), we borrowed $5.0 million from two of our stockholders, Very Hungry LLC and Scott Reiman 1991 Trust (both related parties, see Note 12—Related Party Transactions for additional information) in exchange for $5.5 million in aggregate principal amounts of unsecured subordinated notes (“Bridge Loan Financing”). In consideration for this Bridge Loan Financing we reduced the exercise price on all warrants to purchase our common stock held by these parties to $15.00 per share (from exercise prices ranging from $212.50 per share to $150.00 per share) and extended the maturity of all these warrants to August 1, 2017. Very Hungry, LLC and the Scott Reiman 1991 Trust have agreed to invest their $5.5 million subordinated notes in convertible preferred stock that would be automatically convertible upon stockholder approval of the conversion into the same securities issued in the public offering that closed on June 26, 2013. If stockholder approval is not obtained, the subordinated promissory notes will mature on September 9, 2013.  The notes bear no interest.
		The gross proceeds from this Bridge Loan Financing satisfied the May 15, 2013 funding milestone previously required under The Karlsson Group debt (see above).
		Receipt of $5.0 million Public Offering
		On June 26, 2013, we closed a public offering of an aggregate of 833,334 units (the “Units”), consisting of 833,334 shares of the Company’s common stock, $0.001 par value (the “Common Stock”), together with (i) Series A Warrants to purchase 833,334 additional shares of Common Stock (the “Series A Warrants”) and (ii) Series B Warrants to purchase 833,334 additional shares of Common Stock and additional Series A Warrants to purchase 833,334 additional shares of Common Stock (the “Series B Warrants” and, together with the Series A Warrants, the “Warrants”), at a public offering price of $6.00 per Unit in an underwritten public offering (the “Offering”). The underwriter exercised its option to purchase up to an additional 23,464 warrant units consisting of one Series A Warrant and one Series B Warrant at an exercise price of $0.005 per unit, less underwriting commissions, solely to cover overallotments.
		The Series A Warrants were immediately exercisable on June 26, 2013 at an initial exercise price of $6.00 per share and expire on June 26, 2018. The Series B Warrants were exercisable immediately on June 26, 2013 at an exercise price of $6.00 per share. The Series B Warrants will expire at the close of business on November 1, 2013.
		The Series A Warrants and the Series B Warrants were issued separately from the Common Stock included in the Units and may be transferred separately immediately thereafter. Neither the Series A Warrants nor the Series B Warrants will be listed on any national securities exchange or other trading market, and no trading market for such Warrants is expected to develop.
		The Series A Warrants contain full ratchet anti-dilution protection upon the issuance of any Common Stock, securities convertible into Common Stock, or certain other issuances at a price below the then-existing exercise price of the Series A Warrants, subject to certain exceptions.

Restatement1

Restatement	6 Months Ended							12 Months Ended
	Sep. 30, 2013							Mar. 31, 2013
Restatement	'							'
Restatement	'							'
	Note 20—Restatement							Note 19—Restatement
	The Company made a determination following the completion of the Resource Report and PEA in late 2011 that it had met the requirements to transition from an exploration stage to a development stage company and accordingly began capitalizing all development related costs related to the Holbrook Project as of January 1, 2012. Prior to this date and while we were in the exploration stage, all costs related to the Holbrook Project were expensed as incurred.							The Company made a determination following the completion of the Resource Report and PEA in late 2011 that it had met the requirements to transition from an exploration stage to a development stage company and accordingly began capitalizing all development related costs related to the Holbrook Project as of January 1, 2012. Prior to this date and while we were in the exploration stage, all costs related to the Holbrook Project were expensed as incurred.
	The Company has now determined that its capitalization of these development related costs was not fully in accordance with U.S. GAAP and has amended and restated its September 30, 2013 consolidated financial statements to expense certain costs previously capitalized in the balance sheet accounts for Mineral Properties and Deferred Fees. The net effect of these adjustments on the September 30, 2013 balance sheet reduced the Mineral Properties account balance to $13.7 million from its previously reported balance of $45.1 million and the Deferred Fees account balance to nil from its previously reported balance of $7.3 million. With this restatement, we also reduced our previously reported expense for equity compensation related to unvested, forfeited stock options.  This resulted in a reduction of $1.4 million in our General and Administrative expenses for the six months ended September 30, 2013.							The Company has now determined that its capitalization of these development related costs was not fully in accordance with U.S. GAAP and has amended and restated its March 31, 2012 and March 31, 2013 consolidated financial statements to expense certain costs previously capitalized in the balance sheet accounts for Mineral Properties and Deferred Fees. The net effect of these adjustments on the March 31, 2013 balance sheet was a reduction in the Mineral Properties account balance to $13.7 million from its previously reported balance of $40.0 million and the Deferred Fees account balance to nil from its previously reported balance of $7.8 million. With this restatement, we also reduced our previously reported expense for equity compensation related to unvested, forfeited stock options.  This resulted in a reduction of $0.6 million in our General and Administrative expenses for the year ended March 31, 2013 and nil for the year ended March 31, 2012.
	The following tables reflect the adjustment and restated amounts:							Additionally, we retroactively adjusted for the change in equity as a result of the 1-for-50 reverse stock split that occurred on September 4, 2013.
	Consolidated Balance Sheet							The following tables reflect the adjustment and restated amounts:
		September 30, 2013						Consolidated Balance Sheet
		As Reported		Adjustment		As Restated
		($000’s)		($000’s)		($000’s)			March 31, 2013
	ASSETS								As Reported		Adjustment		As Restated
	Mineral properties	45,140		(31,450	)	13,690			($000’s)		($000’s)		($000’s)
	Deferred fees	7,313		(7,313	)	—		ASSETS
	Total noncurrent assets	53,647		(38,763	)	14,884		Mineral properties	39,994		(26,304	)	13,690
	Total assets	56,860		(38,763	)	18,097		Deferred fees	7,751		(7,751	)	—
	LIABILITIES AND EQUITY							Total noncurrent assets	48,842		(34,055	)	14,787
	Additional paid-in capital	44,119		(6,789	)	37,330		Total assets	51,062		(34,055	)	17,007
	Losses accumulated in the exploration stage	(145,624	)	(31,974	)	(177,598	)	SHAREHOLDER’S DEFICIT
	Total shareholder’s deficit	(101,501	)	(38,763	)	(140,264	)	Common stock	73		(72	)	1
	Total liabilities, redeemable preferred stock and shareholders’ deficit	56,860		(38,763	)	18,097		Additional paid-in capital	35,641		(5,306	)	30,335
								Losses accumulated in exploration stage	(131,577	)	(28,677	)	(160,254	)
	Consolidated Statement of Operations							Total shareholder’s deficit - Prospect Global Resources, Inc.	(95,863	)	(34,055	)	(129,918	)
								Total liabilities and shareholder’s deficit	51,062		(34,055	)	17,007
		Three months ended
		September 30, 2013						Consolidated Statement of Operations
		As Reported		Adjustment		As Restated
		($000’s)		($000’s)		($000’s)			Twelve months ended
	Exploration	—		2,859		2,859			March 31, 2013
	General and administrative	1,902		359		2,261			As Reported		Adjustment		As Restated
	Off-take arrangement fee	—		(438	)	(438	)		($000’s)		($000’s)		($000’s)
	Total expenses	3,652		2,780		6,432		Exploration	—		18,575		18,575
	Loss from operations	(3,652	)	(2,780	)	(6,432	)	General and administrative	42,737		5,721		48,458
	Net loss	(15,581	)	(2,780	)	(18,361	)	Off-take arrangement fee	—		7,751		7,751
	Net loss attributable to non-controlling interest	—		—		—		Total expenses	42,737		32,047		74,784
	Net loss attributable to Prospect Global Resources, Inc.	(15,581	)	(2,780	)	(18,361	)	Loss from operations	(42,737	)	(32,047	)	(74,784	)
	Loss per share - basic and diluted	(5.75	)	(1.02	)	(6.77	)	Net loss	(51,878	)	(32,047	)	(83,925	)
								Net loss attributable to non-controlling interest	12		4,059		4,071
	Consolidated Statement of Operations							Net loss attributable to Prospect Global Resources, Inc.	(51,866	)	(27,988	)	(79,854	)
								Loss per share - basic and diluted	(44.91	)	(24.23	)	(69.14	)
		Six Months ended
		September 30, 2013						Consolidated Statement of Operations
		As Reported		Adjustment		As Restated
		($000’s)		($000’s)		($000’s)			Inception through
	Exploration	—		4,071		4,071			March 31, 2013
	General and administrative	4,691		(336	)	4,355			As Reported		Adjustment		As Restated
	Off-take arrangement fee	—		(438	)	(438	)		($000’s)		($000’s)		($000’s)
	Total expenses	9,742		3,297		13,039		Exploration	5,600		19,623		25,223
	Loss from operations	(9,742	)	(3,297	)	(13,039	)	General and Administrative	61,102		6,049		67,151
	Net loss	(14,047	)	(3,297	)	(17,344	)	Off-take arrangement fee	—		7,751		7,751
	Net loss attributable to Prospect Global Resources, Inc.	(14,047	)	(3,297	)	(17,344	)	Total expenses	66,702		33,423		100,125
	Loss per share - basic and diluted	(6.69	)	(1.55	)	(8.24	)	Loss from operations	(66,702	)	(33,423	)	(100,125	)
								Net loss	(134,668	)	(33,423	)	(168,091	)
	Consolidated Statement of Operations							Net loss attributable to non-controlling interest	3,090		4,747		7,837
								Net loss attributable to Prospect Global Resources, Inc.	(131,578	)	(28,676	)	(160,254	)
		Inception through						Loss per share - basic and diluted	(183.77	)	(40.05	)	(223.82	)
		September 30, 2013
		As Reported		Adjustment		As Restated		Consolidated Statement of Cash Flows
		($000’s)		($000’s)		($000’s)
	Exploration	5,600		23,694		29,294			Twelve months ended
	General and administrative	59,826		5,714		65,540			March 31, 2013
	Off-take arrangement fee	—		7,313		7,313			As Reported		Adjustment		As Restated
	Total expenses	76,443		36,721		113,164			($000’s)		($000’s)		($000’s)
	Loss from operations	(76,443	)	(36,721	)	(113,164	)	Operating activities:
	Net loss	(148,714	)	(36,721	)	(185,435	)	Net loss	(51,878	)	(32,047	)	(83,925	)
	Net loss attributable to non-controlling interest	3,090		4,747		7,837		Services paid for with securities	776		3,877		4,653
Net loss attributable to Prospect Global Resources, Inc.	(145,624	)	(31,974	)	(177,598	)	Stock based compensation	13,794		2,445		16,239
Loss per share - basic and diluted	(124.71	)	(27.35	)	(152.06	)	Deferred fees	(2,287	)	2,287		—
							Account payable	497		1,682		2,179
Consolidated Statement of Cash Flows							Accrued liabilities	(915	)	4,578		3,663
							Net cash used in operating activities	(17,645	)	(17,178	)	(34,823	)
	Six months ended
	September 30, 2013						Investing activities:
	As Reported		Adjustment		As Restated		Mineral properties	(18,777	)	17,178		(1,599	)
	($000’s)		($000’s)		($000’s)		Net cash used in investing activities	(19,796	)	17,178		(2,618	)
Operating activities:
Net loss	(14,047	)	(3,297	)	(17,344	)	Consolidated Statement of Cash Flows
Stock based compensation	1,103		(928	)	175
Account payable and accrued liabilities	223		(2,187	)	(1,964	)		Inception through
Net cash used in operating activities	(3,810	)	(6,412	)	(10,222	)		March 31, 2013
								As Reported		Adjustment		As Restated
Investing activities:								($000’s)		($000’s)		($000’s)
Mineral properties	(6,412	)	6,412		—		Operating activities:
Net cash used in investing activities	(6,807	)	6,412		(395	)	Net loss	(134,668	)	(33,423	)	(168,091	)
							Services paid for with securities	3,156		3,877		7,033
Consolidated Statement of Cash Flows							Stock based compensation	23,512		2,445		25,957
							Deferred fees	(2,288	)	2,288		—
	Inception through						Accounts payable	1,169		1,681		2,850
	September 30, 2013						Accrued liabilities	(531	)	5,049		4,518
	As Reported		Adjustment		As Restated		Net cash used in operating activities	(29,360	)	(18,083	)	(47,443	)
	($000’s)		($000’s)		($000’s)
Operating activities:							Investing activities:
Net loss	(148,715	)	(36,720	)	(185,435	)	Mineral properties	(20,773	)	18,083		(2,690	)
Services paid for with securities	3,695		3,877		7,572		Net cash used in investing activities	(21,879	)	18,083		(3,796	)
Stock based compensation	18,648		1,517		20,165
Deferred fees	(2,288	)	2,288		—		Consolidated Balance Sheet
Account payable and accrued liabilities	861		4,543		5,404
Net cash used in operating activities	(33,170	)	(24,495	)	(57,665	)		March 31, 2012
								As Reported		Adjustment		As Restated
Investing activities:								($000’s)		($000’s)		($000’s)
Mineral properties	(27,185	)	24,495		(2,690	)	ASSETS
Net cash used in investing activities	(28,686	)	24,495		(4,191	)	Mineral properties	13,468		(1,377	)	12,091
							Total noncurrent assets	13,630		(1,377	)	12,253
The Company also restated the September 30, 2012 interim consolidated financial statements to expense certain costs previously capitalized in the balance sheet accounts for Mineral Properties and Deferred Fees. The details and effects of these restatements on the financial statements for the three and six months ended September 30, 2012 are outlined in the tables below. We have also included the effects of the 1 for 50 reverse stock split that occurred on September 4, 2013.							Total assets	25,784		(1,377	)	24,407
							SHAREHOLDER’S EQUITY
Consolidated Statement of Operations							Common Stock	40		(40	)	—
							Additional paid-in capital	91,957		40		91,997
	Three months						Losses accumulated in exploration stage	(79,711	)	(688	)	(80,400	)
	ended September						Total shareholder’s equity - Prospect Global Resources, Inc.	12,285		(688	)	11,597
	30, 2012						Non-controlling interest	7,923		(689	)	7,234
	As Reported		Adjustment		As Restated		Total shareholder’s equity	20,208		(1,377	)	18,831
	($000’s)		($000’s)		($000’s)		Total liabilities and shareholder’s deficit	25,784		(1,377	)	24,407
Exploration	—		5,802		5,802
General and administrative (1)	12,080		3,167		15,247		Consolidated Statement of Operations
Total expenses	12,080		8,969		21,049
Loss from operations	(12,080	)	(8,969	)	(21,049	)		Fiscal Year ending
Net loss	(13,951	)	(8,969	)	(22,920	)		March 31, 2012
Net loss attributable to non-controlling interest	6		807		813			As Reported		Adjustment		As Restated
Net loss attributable to Prospect Global Resources, Inc.	(13,945	)	(8,162	)	(22,107	)		($000’s)		($000’s)		($000’s)
Loss per share - basic and diluted	(12.75	)	(7.46	)	(20.21	)	Exploration	4,954		1,048		6,002
							General and administrative	16,877		329		17,206
(1)   Includes warrant expense of $5,619.							Total expenses	21,831		1,377		23,208
							Loss from operations	(21,831	)	(1,377	)	(23,208	)
Consolidated Statement of Operations							Net loss	(65,580	)	(1,377	)	(66,957	)
							Net loss attributable to non-controlling interest	2,702		689		3,391
	Six Months ended						Net loss attributable to Prospect Global Resources, Inc.	(62,878	)	(688	)	(63,566	)
	September 30,						Loss per share - basic and diluted	(112.28	)	(1.23	)	(113.51	)
	2012
	As Reported		Adjustment		As Restated		Consolidated Statement of Operations
	($000’s)		($000’s)		($000’s)
Exploration	—		11,370		11,370			Inception through
General and administrative (1)	15,408		4,099		19,507			March 31, 2012
Total expenses	15,408		15,469		30,877			As Reported		Adjustment		As Restated
Loss from operations	(15,408	)	(15,469	)	(30,877	)		($000’s)		($000’s)		($000’s)
Net loss	(17,279	)	(15,469	)	(32,748	)	Exploration	5,600		1,048		6,648
Net loss attributable to non-controlling interest	13		4,057		4,070		General and administrative	18,364		329		18,693
Net loss attributable to Prospect Global Resources, Inc.	(17,266	)	(11,412	)	(28,678	)	Total expenses	23,964		1,377		25,341
Loss per share - basic and diluted	(18.31	)	(12.10	)	(30.41	)	Loss from operations	(23,964	)	(1,377	)	(25,341	)
							Net loss	(82,789	)	(1,377	)	(84,166	)
(1)   Includes warrant expense of $5,619.							Net loss attributable to non-controlling interest	3,078		689		3,767
							Net loss attributable to Prospect Global Resources, Inc.	(79,711	)	(688	)	(80,399	)
Consolidated Statement of Cash Flows							Loss per share - basic and diluted	(172.91	)	(1.49	)	(174.40	)
	Six months ended						Consolidated Statement of Cash Flows
	September 30,
	2012							Fiscal Year ended
	As Reported		Adjustment		As Restated			March 31, 2012
	($000’s)		($000’s)		($000’s)			As Reported		Adjustment		As Restated
Operating activities								($000’s)		($000’s)		($000’s)
Net loss	(17,279	)	(15,469	)	(32,748	)	Operating Activities:
Stock based compensation and warrant expense	8,228		2,454		10,682		Net loss	(65,580	)	(1,377	)	(66,957	)
Account payable	(249	)	2,348		2,099		Accrued liabilities	299		471		770
Accrued liabilities	980		1,680		2,660		Net cash used in operating activities	(10,443	)	(906	)	(11,349	)
Net cash used in operating activities	(5,719	)	(8,987	)	(14,706	)
							Investing Activities:
Investing activities							Mineral Properties	(1,949	)	906		(1,043	)
Mineral properties	(9,085	)	8,987		(98	)	Net cash used in investing activities	(2,030	)	906		(1,124	)
Net cash used in investing activities	(9,481	)	8,987		(494	)
							Consolidated Statement of Cash Flows
								Inception through
								March 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(82,789	)	(1,377	)	(84,166	)
							Accrued liabilities	386		471		857
							Net cash used in operating activities	(11,712	)	(906	)	(12,618	)
							Investing activities:
							Mineral properties	(1,997	)	906		(1,091	)
							Net cash used in investing activities	(2,086	)	906		(1,180	)
							The Company has also restated the June 30, 2012, September 30, 2012 and December 31, 2012 interim consolidated financial statements to expense certain costs previously capitalized in the balance sheet accounts for Mineral Properties and Deferred Fees and to adjust for certain expenses related to unvested, forfeited stock options.  As a result, the interim consolidated statements of operations for the three month periods ended June 30, 2012, September 30, 2012 and December 31, 2012 were amended and restated to expense $6.5 million, $9.0 million and $14.7 million, respectively, of costs previously capitalized. The interim consolidated statement of operations for the six month period ended September 30, 2012 and the nine month periods ended December 31, 2012 were amended and restated to expense $15.5 million and $30.2 million(1), respectively, of costs previously capitalized.  Corresponding changes were made to the interim consolidated statement of operations and the interim consolidated statements of cash flows for the periods from inception and the interim consolidated statements of cash flows for the three months ended June 30, 2012, the six months ended September 30, 2012, and the nine months ended December 31, 2012.
							(1) $29.8 million net of the $0.4 million reduction in General and Administrative expenses for unvested, forfeited stock options for the nine months ended December 31, 2012.
							Consolidated Balance Sheet
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	20,067		(7,877	)	12,190
							Total noncurrent assets	20,371		(7,877	)	12,494
							Total assets	22,071		(7,877	)	14,194
							SHAREHOLDER’S EQUITY
							Common stock	39		(39	)	—
							Additional paid-in capital	86,719		39		86,758
							Losses accumulated in exploration stage	(83,032	)	(3,939	)	(86,971	)
							Total shareholder’s equity - Prospect Global Resources, Inc.	4,727		(3,938	)	789
							Non-controlling interest	7,915		(3,939	)	3,976
							Total shareholder’s equity	12,642		(7,877	)	4,765
							Total liabilities and shareholder’s equity	22,071		(7,877	)	14,194
							Consolidated Statement of Operations
								Three months ended
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,568		5,568
							General and administrative	3,328		932		4,260
							Total expenses	3,328		6,500		9,828
							Loss from operations	(3,328	)	(6,500	)	(9,828	)
							Net loss	(3,328	)	(6,500	)	(9,828	)
							Net loss attributable to non-controlling interest	7		3,250		3,257
							Net loss attributable to Prospect Global Resources, Inc.	(3,321	)	(3,250	)	(6,571	)
							Loss per share - basic and diluted	(4.20	)	(4.12	)	(8.32	)
							Consolidated Statement of Operations
								Inception through June
								30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		6,616		12,216
							General and administrative	21,692		1,261		22,953
							Total expenses	27,292		7,877		35,169
							Loss from operations	(27,292	)	(7,877	)	(35,169	)
							Net loss	(86,117	)	(7,877	)	(93,994	)
							Net loss attributable to non-controlling interest	3,085		3,939		7,024
							Net loss attributable to Prospect Global Resources, Inc.	(83,032	)	(3,938	)	(86,970	)
							Loss per share - basic and diluted	(164.42	)	(7.80	)	(172.22	)
							Consolidated Statement of Cash Flows
								Three months ended
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(3,328	)	(6,500	)	(9,828	)
							Accounts payable	434		1,722		2,156
							Accrued liabilities	258		1,088		1,346
							Net cash used in operating activities	(2,079	)	(3,690	)	(5,769	)
							Investing activities:
							Mineral properties	(3,788	)	3,690		(98	)
							Net cash used in investing activities	(8,937	)	3,690		(5,247	)
							Consolidated Statement of Cash Flows
								Inception through June
								30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(86,117	)	(7,877	)	(93,994	)
							Accounts payable	1,106		1,723		2,829
							Accrued liabilities	644		1,559		2,203
							Net cash used in operating activities	(13,292	)	(4,595	)	(17,887	)
							Investing activities:
							Mineral properties	(5,784	)	4,595		(1,189	)
							Net cash used in investing activities	(11,523	)	4,595		(6,928	)
							Consolidated Balance Sheet
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	29,036		(16,846	)	12,190
							Total noncurrent assets	29,638		(16,846	)	12,792
							Total assets	41,604		(16,846	)	24,758
							SHAREHOLDER’S DEFICIT
							Common stock	55		(55	)	—
							Additional paid-in capital	1,275		(4,691	)	(3,416	)
							Losses accumulated in exploration stage	(96,977	)	(12,100	)	(109,077	)
							Total shareholder’s (deficit) - Prospect Global Resources, Inc.	(95,646	)	(16,846	)	(112,492	)
							Total shareholder’s (deficit)	(95,646	)	(16,846	)	(112,492	)
							Total liabilities and shareholder’s deficit (deficit)	41,604		(16,846	)	24,758
							Consolidated Statement of Operations
								Three months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,802		5,802
							General and administrative	12,080		3,167		15,247
							Total expenses	12,080		8,969		21,049
							Loss from operations	(12,080	)	(8,969	)	(21,049	)
							Net loss	(13,951	)	(8,969	)	(22,920	)
							Net loss attributable to non-controlling interest	6		807		813
							Net loss attributable to Prospect Global Resources, Inc.	(13,945	)	(8,162	)	(22,107	)
							Loss per share - basic and diluted	(12.75	)	(7.46	)	(20.21	)
							Consolidated Statement of Operations
								Six Months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		11,370		11,370
							General and administrative	15,408		4,099		19,507
							Total expenses	15,408		15,469		30,877
							Loss from operations	(15,408	)	(15,469	)	(30,877	)
							Net loss	(17,279	)	(15,469	)	(32,748	)
							Net loss attributable to non-controlling interest	13		4,057		4,070
							Net loss attributable to Prospect Global Resources, Inc.	(17,266	)	(11,412	)	(28,678	)
							Loss per share - basic and diluted	(18.31	)	(12.10	)	(30.41	)
							Consolidated Statement of Operations
								Inception through
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		12,418		18,018
							General and administrative	33,771		4,428		38,199
							Total expenses	39,371		16,846		56,217
							Loss from operations	(39,371	)	(16,846	)	(56,217	)
							Net loss	(100,068	)	(16,846	)	(116,914	)
							Net loss attributable to non-controlling interest	3,091		4,746		7,837
							Net loss attributable to Prospect Global Resources, Inc.	(96,977	)	(12,100	)	(109,077	)
							Loss per share - basic and diluted	(168.66	)	(21.04	)	(189.70	)
							Consolidated Statement of Cash Flows
								Six months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities
							Net loss	(17,279	)	(15,469	)	(32,748	)
							Stock based compensation and warrant expense	8,228		2,454		10,682
							Account payable	(249	)	2,348		2,099
							Accrued liabilities	980		1,680		2,660
							Net cash used in operating activities	(5,719	)	(8,987	)	(14,706	)
							Investing activities
							Mineral properties	(9,085	)	8,987		(98	)
							Net cash used in investing activities	(9,481	)	8,987		(494	)
							Consolidated Statement of Cash Flows
								Inception through
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating Activities:
							Net loss	(100,068	)	(16,846	)	(116,914	)
							Stock based compensation	17,946		2,454		20,400
							Account payable	423		2,348		2,771
							Accrued liabilities	1,365		2,151		3,516
							Net cash used in operating activities	(17,430	)	(9,893	)	(27,323	)
							Investing Activities:
							Mineral Properties	(11,082	)	9,893		(1,189	)
							Net cash used in investing activities	(11,567	)	9,893		(1,674	)
							Consolidated Balance Sheet
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	35,991		(23,801	)	12,190
							Deferred fees	7,751		(7,751	)	—
							Total noncurrent assets	44,517		(31,554	)	12,963
							Total assets	55,304		(31,554	)	23,750
							SHAREHOLDER’S DEFICIT
							Common stock	73		(72	)	1
							Additional paid-in capital	34,265		(5,046	)	29,219
							Losses accumulated in exploration stage	(116,727	)	(26,436	)	(143,163	)
							Total shareholder’s deficit - Prospect Global Resources, Inc.	(82,390	)	(31,554	)	(113,944	)
							Non-controlling interest	—		—		—
							Total shareholder’s deficit	(82,390	)	(31,554	)	(113,944	)
							Total liabilities and shareholder’s deficit	55,304		(31,554	)	23,750
							Consolidated Statement of Operations
								Three months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,646		5,646
							General and administrative	15,110		937		16,047
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	15,110		14,334		29,444
							Loss from operations	(15,110	)	(14,334	)	(29,444	)
							Net loss	(19,751	)	(14,334	)	(34,085	)
							Net loss attributable to non-controlling interest	—		—		—
							Net loss attributable to Prospect Global Resources, Inc.	(19,751	)	(14,334	)	(34,085	)
							Loss per share - basic and diluted	(15.36	)	(11.14	)	(26.50	)
							Consolidated Statement of Operations
								Nine Months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		17,016		17,016
							General and administrative	30,518		5,036		35,554
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	30,518		29.803,		60,321
							Loss from operations	(30,518	)	(29,803	)	(60,321	)
							Net loss	(37,030	)	(29,803	)	(66,833	)
							Net loss attributable to non-controlling interest	12		4,057		4,069
							Net loss attributable to Prospect Global Resources, Inc.	(37,018	)	(25,746	)	(62,764	)
							Loss per share - basic and diluted	(34.99	)	(24.33	)	(59.32	)
							Consolidated Statement of Operations
								Inception through
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		18,064		23,664
							General and administrative	48,881		5,365		54,246
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	54,481		31,180		85,661
							Loss from operations	(54,481	)	(31,180	)	(85,661	)
							Net loss	(119,819	)	(31,180	)	(150,999	)
							Net loss attributable to non-controlling interest	3,091		4,746		7,837
							Net loss attributable to Prospect Global Resources, Inc.	(116,728	)	(23,434	)	(140,162	)
							Loss per share - basic and diluted	(182.10	)	(36.56	)	(218.66	)
							Consolidated Statement of Cash Flows
								Nine months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(37,030	)	(29,803	)	(66,833	)
							Services paid for with securities	672		3,875		4,547
							Stock based compensation	12,649		2,578		15,227
							Deferred fees	(1,938	)	1,938		—
							Accounts payable	(1,773	)	3,191		1,418
							Accrued liabilities	1,781		2,780		4,561
							Net cash used in operating activities	(12,650	)	(15,441	)	(28,091	)
							Investing activities:
							Mineral properties	(15,539	)	15,441		(98	)
							Net cash used in investing activities	(16,181	)	15,441		(740	)
							Consolidated Statement of Cash Flows
								Inception through
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities
							Net loss	(119,819	)	(31,180	)	(150,999	)
							Services paid for with securities	3,052		3,876		6,928
							Stock based compensation	22,367		2,578		24,945
							Deferred fees	(1,938	)	1,938		—
							Accounts payable	(1,101	)	3,191		2,090
							Accrued liabilities	2,165		3,252		5,417
							Net cash used in operating activities	(24,363	)	(16,345	)	(40,708	)
							Investing activities
							Mineral properties	(17,535	)	16,345		(1,190	)
							Net cash used in investing activities	(18,266	)	16,345		(1,921	)
							Controls and Procedures
							Evaluation of Disclosure Controls and Procedures (Restated)
							The Company maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in its filings with the SEC is recorded, processed, summarized and reported within the time period specified in the SEC’s rules and forms, and that such information is accumulated and communicated to management, including the Company’s Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), as appropriate, to allow timely decisions regarding required disclosure based on the definition of “disclosure controls and procedures” as defined in Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). In designing and evaluating the disclosure controls and procedures, management has recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management is required to apply judgment in evaluating the Company’s controls and procedures.
							Prior to the filing of the Company’s Form 10-K for the fiscal year ended March 31, 2013, Company management, with the participation of the Company’s CEO and CFO, carried out an evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act) as of March 31, 2013.
							Based on that evaluation, the CEO and CFO concluded that the Company’s disclosure controls and procedures were effective as of March 31, 2013. Subsequently, the Company determined that there was a material weakness in its internal controls over financial reporting as of March 31, 2013 due to the restatement described below and in Note 19 to the consolidated financial statements included elsewhere in this report. As a result, the Company’s management, with the participation of the CEO and CFO, reevaluated the effectiveness of the Company’s disclosure controls and procedures as of March 31, 2013, and the CEO and CFO of the Company concluded that, because of the material weakness in the Company’s internal control over financial reporting described below, the Company’s disclosure controls and procedures were not effective as of March 31, 2013.
							Management’s Report on Internal Control Over Financial Reporting (Restated)
							Management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act. The Company’s internal control over financial reporting is designed, under the supervision of the Company’s CEO and CFO, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America (GAAP). The Company’s internal control over financial reporting includes those policies and procedures that: (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with GAAP, and that receipts and expenditures of the Company are being made only in accordance with authorizations of management and directors of the Company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the financial statements.
							All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with GAAP.
							Prior to filing our 10-K, Company management conducted an evaluation of the effectiveness of its internal control over financial reporting as of March 31, 2013. This evaluation was based on the framework in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on the Company’s evaluation under the framework in Internal Control—Integrated Framework, our CEO and CFO had believed that our internal control over financial reporting was effective as of March 31, 2013.
							Subsequent to that evaluation, in connection with the restatement discussed in Note 19 to the consolidated financial statements included elsewhere in this report, management, with the participation of our CEO and CFO, re-evaluated the effectiveness of our internal control over financial reporting and, based on the criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission, determined that the material weakness described below existed as of March 31, 2013. Accordingly, as a result of this material weakness, our CEO and CFO concluded that our internal control over financial reporting was not effective as of March 31, 2013. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the annual or interim financial statements will not be prevented or detected on a timely basis.
							Management has considered the underlying causes for this Amendment, as more fully described in the Explanatory Note and in Note 19 to the consolidated financial statements included elsewhere in this report, and determined that the restatements were due to a material weakness in the Company’s internal control over financial reporting regarding the requirements under United States generally accepted accounting principles (“U.S. GAAP”) and SEC Industry Guide 7. However, management also believes the circumstances leading to the restatements were isolated incidents related to the interpretation of SEC Industry Guide 7 and specific accounting literature pertaining to unvested stock compensation under U.S. GAAP and that no further corrective action is necessary to remedy the material weakness.
							There have been no changes in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended March 31, 2013 that have materially affected, or that are reasonably likely to materially affect, the Company’s internal control over financial reporting.

Summary_of_Significant_Account4

Summary of Significant Accounting Principles (Policies)	6 Months Ended	12 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Summary of Significant Accounting Principles	'	'
Basis of Presentation	'	'
	Basis of Presentation	Basis of Presentation
	The accompanying unaudited Interim Condensed Consolidated Financial Statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), the instructions to Form 10-Q and Article 10 of Regulation S-X. In management’s opinion, all of the normal and recurring adjustments necessary to fairly present the interim financial information set forth herein have been included. The results of operations for interim periods are not necessarily indicative of the operating results of a full year or of future years. These interim financial statements follow the same accounting policies and methods of their application as the most recent annual financial statements unless specifically discussed below. These interim financial statements are unaudited and should be read in conjunction with the Company’s audited financial statements and related footnotes for the year ended March 31, 2013 to be included in the Company’s Annual Report on Form 10-K/A to be filed with the SEC as soon as administratively possible.	The accompanying consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”), the instructions to Form 10-K and applicable Articles of Regulation S-X. In the opinion of management, all of the normal and recurring adjustments necessary to fairly present the financial information set forth herein have been included.
	We have incurred net losses totaling $177.6 million since inception and at September 30, 2013 we had a working capital deficit $23.7 million.  These consolidated interim financial statements have been prepared on a going concern basis, which contemplates the realization of assets and settlement of liabilities in the normal course of business for the foreseeable future and do not give effect to any adjustments which would be necessary should the Company be unable to continue as a going concern.
Principles of Consolidation	'	'
		Principles of Consolidation
		As of March 31, 2013, the Company was the 100% owner of Prospect Global Resources Inc., a Delaware corporation (“old Prospect Global”).  Old Prospect Global is a holding company and the 100% owner of AWP; and, therefore, the Company accordingly provides the consolidated financial statements for the Company, old Prospect Global and AWP.  The purpose of consolidated financial statements is to present the results of operations and the financial position of the Company and its subsidiaries as if the group were a single company. The Company has disclosed in the financial statements the amount of non-controlling interest attributable to The Karlsson Group (prior to the August 1, 2012 acquisition of the remaining 50% non-controlling interest) and has eliminated all intercompany gains and losses. All intercompany accounts and transactions have been eliminated in the consolidation.
Exploration Stage	'	'
		Exploration Stage
		As of March 31, 2013, the Company was considered an exploration stage enterprise since none of the Company’s mineral properties had proven or probable reserves as determined under the requirements of SEC Industry Guide No. 7. Further analysis, including additional in-fill drilling and a definitive feasibility study, is required before any portion of the resource, if any, can potentially be upgraded to a proven or probable reserve status pursuant to SEC Industry Guide 7.
Use of Estimates	'	'
	Use of Estimates	Use of Estimates
	The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses incurred during the reporting period. The Company bases its estimates on various assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions.	The preparation of the Company’s consolidated financial statements requires management to make judgments, estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses incurred during the reporting period. The Company bases its estimates on various assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions. Significant estimates with regard to the Company’s consolidated financial statements include the fair value of mineral interests contributed by The Karlsson Group; the calculation of certain conversion features of the Company’s secured convertible notes; the embedded derivative liabilities associated with those secured convertible notes and the outstanding warrants issued by the Company (and the associated changes period to period); stock-based compensation; the liability associated with the Grandhaven Option; the fair market value of consideration associated with The Karlsson Group Acquisition and the Karlsson Note Tax Gross-Up (as defined in Note 8—Debt) amount.
Cash and Cash Equivalents	'	'
		Cash and Cash Equivalents
		Cash is comprised of cash deposits held at banks.  Cash equivalents are highly liquid investments with original maturities of three months or less.  As of March 31, 2013 and 2012, the Company had no cash equivalents. During the course of our operations, our balance of cash and cash equivalents held in bank accounts may exceed amounts covered by the Federal Deposit Insurance Corporation (FDIC).
Equipment	'	'
		Equipment
		Equipment is recorded at cost. Depreciation is calculated on the straight-line method over the estimated useful life of the assets. Estimated useful lives of assets currently held range from 2-10 years. The Company’s policy is to review equipment for impairment at least annually.
Mineral Properties	'	'
	Mineral Properties	Mineral Properties
	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.	The Company is primarily engaged in the acquisition, exploration and exploitation of mineral properties with the objective of extracting minerals from these properties. Mineral property exploration costs are expensed as incurred. Costs for acquired mineral property are capitalized and then impaired if the criteria for capitalization are not met. Capitalization of mine development costs that meet the definition of an asset will commence once we have proven and probable reserves in accordance with SEC Industry Guide 7.
	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.	In the event that a mineral property is acquired through the issuance of the Company’s shares, the mineral property is recorded at the fair value of the respective property or the fair value of common shares and other instruments issued, whichever is more readily determinable. When mineral properties are acquired under option agreements with future acquisition payments to be made at the sole discretion of the Company, those future payments, whether in cash, shares, or other instruments are recorded only when the Company has made or is obliged to make the payment or issue the shares or instruments.
Exploration Expense	'	'
		Exploration Expense
		Exploration expense includes geological and geophysical work performed on areas that do not yet have identified resources. These costs are expensed as incurred.
Financial Instruments	'	'
		Financial Instruments
		Prospect’s financial instruments consist of cash and cash equivalents, accounts receivable, notes payable, accounts payable, accrued liabilities, warrants and stock options. We carry cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and notes payable at historical costs; their respective estimated fair values approximate carrying values due to their current nature.
		We do not use derivative financial instruments to hedge exposures to cash flow, market or foreign-currency risks. However, we have in the past entered into certain financial instruments and contracts, such as convertible note financing arrangements and the Karlsson Note that contained embedded derivative features. The convertible note financing arrangements were carried as derivative liabilities, at fair value, in our financial statements until their conversion into common stock on November 22, 2011.
Income Taxes	'	'
		Income Taxes
		The Company accounts for income taxes using the asset and liability method of accounting for deferred income taxes. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases.
		A valuation allowance is required to the extent it is more-likely-than-not that a deferred tax asset will not be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period that includes the enactment date.
		The Company also reports taxes based on tax positions that meet a more-likely-than-not standard and that are measured at the amount that is more-likely-than-not to be realized. Differences between financial and tax reporting which do not meet this threshold are required to be recorded as unrecognized tax benefits. The Company classifies penalty and interest expense related to income tax liabilities as an income tax expense. There are no penalties or interest recognized in the statement of operations or accrued on the balance sheet.
Loss per Share	'	'
		Loss per Share
		Basic loss per share of common stock is calculated by dividing net loss available to common stockholders by the weighted average number of common shares outstanding for the respective period. Diluted loss per common share reflects the potential dilution that would occur if contracts to issue common stock were exercised or converted into common stock. For the 12 months ended March 31, 2013 and 2012 and from August 5, 2010 (Inception) to March 31, 2013, basic loss per common share and diluted loss per common share were the same as any potentially dilutive shares would have been anti-dilutive to the periods. Refer to Note 15—Loss per Share for additional information.
Equity-Based Compensation	'	'
		Equity-Based Compensation
		The Company recognizes compensation costs for share-based awards based on the estimated fair value of the employee awards on their grant date. The fair value of stock options is estimated using the Black-Scholes option pricing model. Compensation costs are recognized on a straight-line basis over each issuance’s respective vesting period.
		From time to time, the Company will issue share-based awards, including options and warrants, to non-employees. The fair value of these awards issued to non-employees (typically consultants) is measured on the earlier of the date the performance is complete or the date the consultant is committed to perform. In the event that the measurement date occurs after an interim reporting date, the awards are measured at their then-current fair value at each interim reporting date, estimated using the Black-Scholes pricing model. The fair value of these awards is expensed on a straight-line basis over the associated performance period.
Warrants	'	'
		Warrants
		The Company classifies its issued and outstanding warrants as liabilities or equity in its financial statements, depending upon the criteria met and specific circumstances at a given point in time. Refer to Note 13—Equity Based Compensation and Note 14—Shareholders’ Equity for additional information.
Recent Accounting Pronouncements	'	'
	Recent Accounting Pronouncements	Recent Accounting Pronouncements
	The Company has considered recently issued accounting pronouncements and does not believe that such pronouncements are of significance, or potential significance, to the Company.	The Company has considered recently issued accounting pronouncements and does not believe that such pronouncements are of significance, or potential significance, to the Company.

Other_Current_Assets_Tables1

Other Current Assets (Tables)	6 Months Ended					12 Months Ended
	Sep. 30, 2013					Mar. 31, 2013
Other Current Assets	'					'
Schedule of other current assets	'					'
		September 30, 2013		March 31, 2013			March 31, 2013		March 31, 2012
		(thousands)		(thousands)			(thousands)		(thousands)
		(unaudited)				Prepaid insurance & rent	$	276	$	223
	Prepaid insurance & rent	$	281	$	276	Other	389		605
	Land purchase option	—		500		SK Land Holdings Option	500		—
	Other	40		395		Total other current assets	$	1,165	$	828
	Total other current assets	$	321	$	1,171

Accounts_Payable_and_Accrued_L4

Accounts Payable and Accrued Liabilities (Tables)	12 Months Ended
	Mar. 31, 2013
Accounts Payable and Accrued Liabilities	'
Schedule of accrued liabilities	'
		March 31, 2013		March 31, 2012
		(thousands)		(thousands)
	Drilling/permitting	$	140	$	471
	Mineral lease obligations	1,500		—
	Legal	112		280
	Vacation, bonuses and severance pay	982		27
	Board of Directors’ fees	125		—
	Off-take arrangement fee	1,588		—
	Interest on promissory notes	7,229		—
	Other	82		66
	Total accrued liabilities	$	11,758	$	844

Debt_Tables

Debt (Tables)	6 Months Ended							12 Months Ended
	Sep. 30, 2013							Mar. 31, 2013
Debt	'							'
Schedule of company's debt	'							'
									March 31, 2013			March 31, 2012
		September 30, 2013			March 31, 2013				(thousands)			(thousands)
		(thousands)			(thousands)			Karlsson senior secured note	$	115,282		$	—
		(unaudited)						Apollo unsecured notes	6,750			—
	Karlsson senior secured note	$	117,472		$	115,282		Tax gross-up on Karlsson senior secured note	6,226			—
	Apollo unsecured notes	6,750			6,750			Total debt	128,258			—
	Tax compensation on Karlsson senior secured note	17,629			6,226			Less: current portion	(128,258		)	—
	Total debt and tax compensation	141,851			128,258			Total long-term debt	$	—		$	—
	Less: Unamortized debt discount*	(26,329		)	—
	Less: current portion of debt and tax compensation	(1,164		)	(128,258		)
	Total long-term debt and tax compensation	$	114,358		$	—
	* Includes gross discount on the Karlsson Note of $34,528, net of amortized discount of $8,199.

Convertible_Notes_Tables

Convertible Notes (Tables)	6 Months Ended				12 Months Ended
	Sep. 30, 2013				Mar. 31, 2013
Convertible Notes	'				'
Schedule of notes outstanding prior to their conversion	'				'
					The following notes were outstanding prior to their conversion on November 22, 2011:
					Secured Convertible Notes
					$2.0 million face value secured convertible note due January 24, 2012
					$0.5 million face value secured convertible note due January 24, 2012
					$2.5 million face value secured convertible note due April 24, 2012
					$1.5 million face value secured convertible note due August 3, 2012
					$1.5 million face value secured convertible note due September 18, 2012
Schedule of allocation of the proceeds from the convertible notes on the financing dates	'				'
	As of September 30, 2013, we had the following warrants outstanding:				Secured Convertible Notes	Merkin Note			COR Note			Hexagon Note			Avalon Note			Second
						$2.0 million			$0.5 million			$2.5 million			$1.5 million			Hexagon Note
	Outstanding Warrants	Exercise Price ($)	Expiration	Notes		Face Value			Face Value			Face Value			Face Value			$1.5 million
	600	3.15 –4.04	2018															Face Value
	1,787,171	4.05	2018	Contain full ratchet anti-dilution protection to $3.50 per share		(thousands)			(thousands)			(thousands)			(thousands)			(thousands)
	307,424	6.00 – 17.00	2017, 2018		Proceeds	$	(2,000	)	$	(500	)	$	(2,500	)	$	(1,500	)	$	(1,500	)
	159,468	62.50 – 251.00	2014 - 2018		Compound embedded derivative	10,068			333			460			708			432
	2,254,663				Warrant derivative liability	—			—			3,954			5,147			2,135
					Day-one derivative loss	(8,068		)	—			(1,914		)	(4,355		)	(1,067		)
					Carrying value	$	—		$	(167	)	$	—		$	—		$	—

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Tables)	6 Months Ended								12 Months Ended
	Sep. 30, 2013								Mar. 31, 2013
Derivative Financial Instruments	'								'
Summary of the effects on gain (loss) associated with changes in the fair values of derivative financial instruments by type of financing	'								'
									Our financings giving rise to derivative financial instruments and the income effects:	Year Ended
										March 31, 2012
										(thousands)
									Compound embedded derivatives	$	(23,525	)
									Day-one derivative loss	(7,336		)
									Warrant derivative liabilities	(8,949		)
									Total derivative loss	$	(39,810	)
Reconciliation of changes in the fair value of financial liabilities	'								'
		Derivative Warrant		Very Hungry			Buffalo Embedded			Derivative Financial Information
		Liability		Embedded			Derivative			2013			2012
				Derivative						(thousands)			(thousands)
	Balance at March 31, 2013	$	—	$	—		$	—	Beginning balance as of period ended March 31	$	—		$	(17,288	)
	Mark-to-market adjustment	17,055		—			—		Total gains or losses (realized or unrealized):
	Extinguishment — debt (net of amortization)	—		—			—		Included in earnings	—			(20,956		)
	New instrument — initial valuation	—		2,900			650		Warrant issuances	—			(12,396		)
	Extinguishment — embedded derivative	—		(2,900		)	—		Warrant reclassification to equity	—			20,228
	Balance at September 30, 2013	$	17,055	$	—		$	650	Debenture issuances	—			(12,001		)
									Debenture conversions	—			42,413
									Ending balance as of March 31	—			—

Equity_Based_Compensation_Tabl1

Equity Based Compensation (Tables)	6 Months Ended								12 Months Ended
	Sep. 30, 2013								Mar. 31, 2013
Equity Based Compensation	'								'
Schedule of assumptions used in estimating the fair value of awards granted	'								'
	Other assumptions used in estimating the fair value of awards granted through September 30, 2013 included the following:
	Remaining Term	8.17 to 9.51 years
	Volatility*	113.4% to 181.5%	*
	Risk-Free Rate	0.04% to 2.43%
	Dividend Yield	—
	*        The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.
Summary of stock option activity under the Plans	'								'
	Stock Options	Shares		Weighted-		Aggregate		Weighted-	Stock Options	Shares (000)		Weighted-		Aggregate		Weighted-
				Average		Intrinsic		Average				Average		Intrinsic		Average
				Exercise		Value ($000)		Remaining				Exercise		Value ($000)		Remaining
				Price				Term (Years)				Price				Term (Years)
	Outstanding at March 31, 2013	186,160		$	160.71	$	—	9,02	Outstanding at March 31, 2012	68		$	212.5	$	19,636	7.69
	Granted	2,000		15		—		2.1	Granted	127		130.66		—		9.01
	Exercised	—		—		—		—	Exercised	—		—		—		—
	Forfeited or expired	24,060		147.87		—		—	Forfeited or expired	(9	)	130		—		—
	Outstanding at September 30, 2013	164,100		$	160.83	$	—	8.55	Outstanding at March 31, 2013	186		160.71		—		9.02
	Vested at September 30, 2013	147,767		$	163.95	$	—	8.48	Vested at March 31, 2013	132		171.67		—		8.87
Summary of status of the non-vested stock options	'								'
	Non-vested Stock Options	Shares		Weighted					Non-vested Stock Options	Shares (000)		Weighted Average
				Average								Grant Date
				Grant Date								Fair Value
				Fair Value					Non-vested at March 31, 2012	20		$	123.48
	Non-vested at March 31, 2013	53,883		$	99.63				Granted	127		95.24
	Granted	2,000		2.1					Vested	(84	)	96.24
	Vested	(25,550	)	85.8					Forfeited	(9	)	123.1
	Forfeited	(14,000	)	130.59					Non-vested at March 31, 2013	54		99.63
	Non-vested at September 30, 2013	16,333		$	82.78
Stock Options	'								'
Equity Based Compensation	'								'
Schedule of assumptions used in estimating the fair value of awards granted	'								'
									Assumptions used in estimating the fair value of awards granted through March 31, 2013 included the following:
									Expected term	5.0 to 9.47 years
									Volatility*	128.57% to 181.46%	*
									Risk-free rate	0.63% to 2.00%
									Dividend yield	—
									*   The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.
Warrants Issued for Services	'								'
Equity Based Compensation	'								'
Schedule of assumptions used in estimating the fair value of awards granted	'								'
									Assumptions used in estimating the fair value of awards granted through March 31, 2013 included the following:
									Expected term	2.0 to 5.0 years
									Volatility*	106.22% to 177.26%	*
									Risk-free rate	0.22% to 1.52%
									Dividend yield	—
									*           The Company’s estimates of expected volatility are based on the historic volatility of the Company’s common stock as well as the historic volatility of the Company’s peers due to the limited availability of historical trading information on the Company itself.

Loss_per_Share_Tables1

Loss per Share (Tables)	6 Months Ended																12 Months Ended
	Sep. 30, 2013																Mar. 31, 2013
Loss per Share	'																'
Computation of basic and fully diluted weighted average shares outstanding and loss per share of common stock	'																'
	The following sets forth the computation of basic and fully diluted weighted average shares outstanding and loss per share of common stock for the periods indicated (unaudited, in thousands except for per share amounts):
																		Year Ended			Year Ended			Cumulative from
		Three Months			Three Months			Six Months			Six Months			Cumulative from				March 31,			March 31,			August 5, 2010
		Ended September			Ended September			Ended September			Ended September			August 5, 2010				2013			2012			(Inception)
		30, 2013			30, 2012			30, 2013			30, 2012			(Inception)										through March
														through										31, 2013
														September				(thousands, except per share amounts)
														30, 2013			Net loss attributable to Prospect Global Resources Inc.	$	(79,854	)	$	(63,566	)	$	(160,254	)
		(unaudited)			(unaudited)			(unaudited)			(unaudited)			(unaudited)			Weighted average number of common shares outstanding — basic	1,155			560			716
	Numerator																Dilution effect of restricted stock and warrants	—			—			—
	Net loss attributable to Prospect Global Resources Inc.	$	(18,361	)	$	(22,107	)	$	(17,344	)	$	(28,678	)	$	(177,598	)	Weighted average number of common shares outstanding — fully diluted	1,155			560			716
	Undeclared Preferred Stock Dividends	(160		)	—			(160		)	—			(160		)	Loss per share of common stock:
	Net loss applicable to common shares for basic and diluted earnings per share	$	(18,521	)	$	(22,107	)	$	(17,504	)	$	(28,678	)	$	(177,758	)	Basic and fully diluted loss per share of common stock	$	(69.14	)	$	(113.51	)	$	(223.82	)
	Denominator
	Weighted average number of common shares outstanding — basic	2,737			1,094			2,124			943			1,169
	Dilution effect of restricted stock and warrants	—			—									—
	Weighted average number of common shares outstanding — fully diluted	2,737			1,094			2,124			943			1,169
	Basic and fully diluted loss per share of common stock	$	(6.77	)	$	(20.21	)	$	(8.24	)	$	(30.41	)	$	(152.06	)

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2013
Income Taxes	'
Schedule of components of income/(loss) from continuing operations before income taxes	'
		Year Ended			Year Ended
		March 31, 2013			March 31, 2012
		(thousands)			(thousands)
	United States	$	(79,854	)	$	(63,566	)
	Total	$	(79,854	)	$	(63,566	)
Summary of the components of the net deferred tax assets and liabilities	'
		Year Ended			Year Ended
		March 31, 2013			March 31, 2012
		(thousands)
	Current deferred tax assets
	Charitable contributions	$	3		$	—
	Accrued bonuses	170			—
	Accrued severance	138			—
	Accrued expenses	4			10
	Total current deferred tax assets	$	315		$	10
	Non-current deferred tax assets
	Investment in AWP	$	—		$	1,085
	Operating loss carry forward	20,493			3,321
	Start-up costs	100			107
	Stock compensation	7,247			3,505
	Warrant expense	2,161			—
	Mineral properties	52,625			—
	Exploration	5,892			—
	Total non-current deferred tax assets	$	88,518		$	8,018
	Valuation allowances	$	(88,505	)	$	(7,956	)
	Total deferred tax assets	$	328		$	72
	Current deferred tax liabilities
	Prepaid expenses	$	(226	)	$	(60	)
	Total current deferred tax liabilities	$	(226	)	$	(60	)
	Non-current deferred tax liabilities
	Fixed assets	(102		)	(12		)
	Total non-current deferred tax liabilities	$	(102	)	$	(12	)
	Total deferred tax liability	(328		)	(72		)
	Net deferred income tax assets (liabilities)	$	—		$	—
Schedule of components of the consolidated income tax benefit (provision) from continuing operations	'
		Year Ended			Year Ended
		March 31, 2013			March 31, 2012
		(thousands)			(thousands)
	Current portion of income tax expense (benefit)
	U.S. federal	$	—		$	—
	U.S. state	—			—
	Deferred portion of income tax expense (benefit)
	U.S. federal	—			—
	U.S. state	—			—
	Total income tax expense (benefit)	$	—		$	—
Schedule of reconciliation of the actual income tax benefit (provision) and the tax computed by applying the U.S. federal rate	'
		Year Ended			Year Ended
		March 31, 2013			March 31, 2012
		(thousands)			(thousands)
	Tax benefit from continuing operations	$	(29,374	)	$	(2,214	)
	State tax benefit from continuing operations	(1,008		)	(63		)
	Non-deductible expenses	384			168
	Derivative expense	665			—
	Change in valuation allowance	80,549			1,765
	Non-controlling interest	1,475			247
	AWP step-up	(52,625		)	—
	Other	(66		)	(97		)
	Total income tax expense (benefit)	$	—		$	—

Restatement_Tables1

Restatement (Tables)	6 Months Ended							12 Months Ended
	Sep. 30, 2013							Mar. 31, 2013
Restatement	'							'
Schedule of adjustment and restated amounts	'							'
	Consolidated Balance Sheet							Consolidated Balance Sheet
		September 30, 2013							March 31, 2013
		As Reported		Adjustment		As Restated			As Reported		Adjustment		As Restated
		($000’s)		($000’s)		($000’s)			($000’s)		($000’s)		($000’s)
	ASSETS							ASSETS
	Mineral properties	45,140		(31,450	)	13,690		Mineral properties	39,994		(26,304	)	13,690
	Deferred fees	7,313		(7,313	)	—		Deferred fees	7,751		(7,751	)	—
	Total noncurrent assets	53,647		(38,763	)	14,884		Total noncurrent assets	48,842		(34,055	)	14,787
	Total assets	56,860		(38,763	)	18,097		Total assets	51,062		(34,055	)	17,007
	LIABILITIES AND EQUITY							SHAREHOLDER’S DEFICIT
	Additional paid-in capital	44,119		(6,789	)	37,330		Common stock	73		(72	)	1
	Losses accumulated in the exploration stage	(145,624	)	(31,974	)	(177,598	)	Additional paid-in capital	35,641		(5,306	)	30,335
	Total shareholder’s deficit	(101,501	)	(38,763	)	(140,264	)	Losses accumulated in exploration stage	(131,577	)	(28,677	)	(160,254	)
	Total liabilities, redeemable preferred stock and shareholders’ deficit	56,860		(38,763	)	18,097		Total shareholder’s deficit - Prospect Global Resources, Inc.	(95,863	)	(34,055	)	(129,918	)
								Total liabilities and shareholder’s deficit	51,062		(34,055	)	17,007
	Consolidated Statement of Operations
								Consolidated Statement of Operations
		Three months ended
		September 30, 2013							Twelve months ended
		As Reported		Adjustment		As Restated			March 31, 2013
		($000’s)		($000’s)		($000’s)			As Reported		Adjustment		As Restated
	Exploration	—		2,859		2,859			($000’s)		($000’s)		($000’s)
	General and administrative	1,902		359		2,261		Exploration	—		18,575		18,575
	Off-take arrangement fee	—		(438	)	(438	)	General and administrative	42,737		5,721		48,458
	Total expenses	3,652		2,780		6,432		Off-take arrangement fee	—		7,751		7,751
	Loss from operations	(3,652	)	(2,780	)	(6,432	)	Total expenses	42,737		32,047		74,784
	Net loss	(15,581	)	(2,780	)	(18,361	)	Loss from operations	(42,737	)	(32,047	)	(74,784	)
	Net loss attributable to non-controlling interest	—		—		—		Net loss	(51,878	)	(32,047	)	(83,925	)
	Net loss attributable to Prospect Global Resources, Inc.	(15,581	)	(2,780	)	(18,361	)	Net loss attributable to non-controlling interest	12		4,059		4,071
	Loss per share - basic and diluted	(5.75	)	(1.02	)	(6.77	)	Net loss attributable to Prospect Global Resources, Inc.	(51,866	)	(27,988	)	(79,854	)
								Loss per share - basic and diluted	(44.91	)	(24.23	)	(69.14	)
	Consolidated Statement of Operations
								Consolidated Statement of Operations
		Six Months ended
		September 30, 2013							Inception through
		As Reported		Adjustment		As Restated			March 31, 2013
		($000’s)		($000’s)		($000’s)			As Reported		Adjustment		As Restated
	Exploration	—		4,071		4,071			($000’s)		($000’s)		($000’s)
	General and administrative	4,691		(336	)	4,355		Exploration	5,600		19,623		25,223
	Off-take arrangement fee	—		(438	)	(438	)	General and Administrative	61,102		6,049		67,151
	Total expenses	9,742		3,297		13,039		Off-take arrangement fee	—		7,751		7,751
	Loss from operations	(9,742	)	(3,297	)	(13,039	)	Total expenses	66,702		33,423		100,125
	Net loss	(14,047	)	(3,297	)	(17,344	)	Loss from operations	(66,702	)	(33,423	)	(100,125	)
	Net loss attributable to Prospect Global Resources, Inc.	(14,047	)	(3,297	)	(17,344	)	Net loss	(134,668	)	(33,423	)	(168,091	)
	Loss per share - basic and diluted	(6.69	)	(1.55	)	(8.24	)	Net loss attributable to non-controlling interest	3,090		4,747		7,837
								Net loss attributable to Prospect Global Resources, Inc.	(131,578	)	(28,676	)	(160,254	)
	Consolidated Statement of Operations							Loss per share - basic and diluted	(183.77	)	(40.05	)	(223.82	)
		Inception through						Consolidated Statement of Cash Flows
		September 30, 2013
		As Reported		Adjustment		As Restated			Twelve months ended
		($000’s)		($000’s)		($000’s)			March 31, 2013
	Exploration	5,600		23,694		29,294			As Reported		Adjustment		As Restated
	General and administrative	59,826		5,714		65,540			($000’s)		($000’s)		($000’s)
	Off-take arrangement fee	—		7,313		7,313		Operating activities:
	Total expenses	76,443		36,721		113,164		Net loss	(51,878	)	(32,047	)	(83,925	)
	Loss from operations	(76,443	)	(36,721	)	(113,164	)	Services paid for with securities	776		3,877		4,653
	Net loss	(148,714	)	(36,721	)	(185,435	)	Stock based compensation	13,794		2,445		16,239
	Net loss attributable to non-controlling interest	3,090		4,747		7,837		Deferred fees	(2,287	)	2,287		—
	Net loss attributable to Prospect Global Resources, Inc.	(145,624	)	(31,974	)	(177,598	)	Account payable	497		1,682		2,179
	Loss per share - basic and diluted	(124.71	)	(27.35	)	(152.06	)	Accrued liabilities	(915	)	4,578		3,663
								Net cash used in operating activities	(17,645	)	(17,178	)	(34,823	)
	Consolidated Statement of Cash Flows
								Investing activities:
	Six months ended						Mineral properties	(18,777	)	17,178		(1,599	)
	September 30, 2013						Net cash used in investing activities	(19,796	)	17,178		(2,618	)
	As Reported		Adjustment		As Restated
	($000’s)		($000’s)		($000’s)		Consolidated Statement of Cash Flows
Operating activities:
Net loss	(14,047	)	(3,297	)	(17,344	)		Inception through
Stock based compensation	1,103		(928	)	175			March 31, 2013
Account payable and accrued liabilities	223		(2,187	)	(1,964	)		As Reported		Adjustment		As Restated
Net cash used in operating activities	(3,810	)	(6,412	)	(10,222	)		($000’s)		($000’s)		($000’s)
							Operating activities:
Investing activities:							Net loss	(134,668	)	(33,423	)	(168,091	)
Mineral properties	(6,412	)	6,412		—		Services paid for with securities	3,156		3,877		7,033
Net cash used in investing activities	(6,807	)	6,412		(395	)	Stock based compensation	23,512		2,445		25,957
							Deferred fees	(2,288	)	2,288		—
Consolidated Statement of Cash Flows							Accounts payable	1,169		1,681		2,850
							Accrued liabilities	(531	)	5,049		4,518
	Inception through						Net cash used in operating activities	(29,360	)	(18,083	)	(47,443	)
	September 30, 2013
	As Reported		Adjustment		As Restated		Investing activities:
	($000’s)		($000’s)		($000’s)		Mineral properties	(20,773	)	18,083		(2,690	)
Operating activities:							Net cash used in investing activities	(21,879	)	18,083		(3,796	)
Net loss	(148,715	)	(36,720	)	(185,435	)
Services paid for with securities	3,695		3,877		7,572		Consolidated Balance Sheet
Stock based compensation	18,648		1,517		20,165
Deferred fees	(2,288	)	2,288		—			March 31, 2012
Account payable and accrued liabilities	861		4,543		5,404			As Reported		Adjustment		As Restated
Net cash used in operating activities	(33,170	)	(24,495	)	(57,665	)		($000’s)		($000’s)		($000’s)
							ASSETS
Investing activities:							Mineral properties	13,468		(1,377	)	12,091
Mineral properties	(27,185	)	24,495		(2,690	)	Total noncurrent assets	13,630		(1,377	)	12,253
Net cash used in investing activities	(28,686	)	24,495		(4,191	)	Total assets	25,784		(1,377	)	24,407
							SHAREHOLDER’S EQUITY
Consolidated Statement of Operations							Common Stock	40		(40	)	—
							Additional paid-in capital	91,957		40		91,997
	Three months						Losses accumulated in exploration stage	(79,711	)	(688	)	(80,400	)
	ended September						Total shareholder’s equity - Prospect Global Resources, Inc.	12,285		(688	)	11,597
	30, 2012						Non-controlling interest	7,923		(689	)	7,234
	As Reported		Adjustment		As Restated		Total shareholder’s equity	20,208		(1,377	)	18,831
	($000’s)		($000’s)		($000’s)		Total liabilities and shareholder’s deficit	25,784		(1,377	)	24,407
Exploration	—		5,802		5,802
General and administrative (1)	12,080		3,167		15,247		Consolidated Statement of Operations
Total expenses	12,080		8,969		21,049
Loss from operations	(12,080	)	(8,969	)	(21,049	)		Fiscal Year ending
Net loss	(13,951	)	(8,969	)	(22,920	)		March 31, 2012
Net loss attributable to non-controlling interest	6		807		813			As Reported		Adjustment		As Restated
Net loss attributable to Prospect Global Resources, Inc.	(13,945	)	(8,162	)	(22,107	)		($000’s)		($000’s)		($000’s)
Loss per share - basic and diluted	(12.75	)	(7.46	)	(20.21	)	Exploration	4,954		1,048		6,002
							General and administrative	16,877		329		17,206
(1)   Includes warrant expense of $5,619.							Total expenses	21,831		1,377		23,208
							Loss from operations	(21,831	)	(1,377	)	(23,208	)
Consolidated Statement of Operations							Net loss	(65,580	)	(1,377	)	(66,957	)
							Net loss attributable to non-controlling interest	2,702		689		3,391
	Six Months ended						Net loss attributable to Prospect Global Resources, Inc.	(62,878	)	(688	)	(63,566	)
	September 30,						Loss per share - basic and diluted	(112.28	)	(1.23	)	(113.51	)
	2012
	As Reported		Adjustment		As Restated		Consolidated Statement of Operations
	($000’s)		($000’s)		($000’s)
Exploration	—		11,370		11,370			Inception through
General and administrative (1)	15,408		4,099		19,507			March 31, 2012
Total expenses	15,408		15,469		30,877			As Reported		Adjustment		As Restated
Loss from operations	(15,408	)	(15,469	)	(30,877	)		($000’s)		($000’s)		($000’s)
Net loss	(17,279	)	(15,469	)	(32,748	)	Exploration	5,600		1,048		6,648
Net loss attributable to non-controlling interest	13		4,057		4,070		General and administrative	18,364		329		18,693
Net loss attributable to Prospect Global Resources, Inc.	(17,266	)	(11,412	)	(28,678	)	Total expenses	23,964		1,377		25,341
Loss per share - basic and diluted	(18.31	)	(12.10	)	(30.41	)	Loss from operations	(23,964	)	(1,377	)	(25,341	)
							Net loss	(82,789	)	(1,377	)	(84,166	)
(1)   Includes warrant expense of $5,619.							Net loss attributable to non-controlling interest	3,078		689		3,767
							Net loss attributable to Prospect Global Resources, Inc.	(79,711	)	(688	)	(80,399	)
Consolidated Statement of Cash Flows							Loss per share - basic and diluted	(172.91	)	(1.49	)	(174.40	)
	Six months ended						Consolidated Statement of Cash Flows
	September 30,
	2012							Fiscal Year ended
	As Reported		Adjustment		As Restated			March 31, 2012
	($000’s)		($000’s)		($000’s)			As Reported		Adjustment		As Restated
Operating activities								($000’s)		($000’s)		($000’s)
Net loss	(17,279	)	(15,469	)	(32,748	)	Operating Activities:
Stock based compensation and warrant expense	8,228		2,454		10,682		Net loss	(65,580	)	(1,377	)	(66,957	)
Account payable	(249	)	2,348		2,099		Accrued liabilities	299		471		770
Accrued liabilities	980		1,680		2,660		Net cash used in operating activities	(10,443	)	(906	)	(11,349	)
Net cash used in operating activities	(5,719	)	(8,987	)	(14,706	)
							Investing Activities:
Investing activities							Mineral Properties	(1,949	)	906		(1,043	)
Mineral properties	(9,085	)	8,987		(98	)	Net cash used in investing activities	(2,030	)	906		(1,124	)
Net cash used in investing activities	(9,481	)	8,987		(494	)
							Consolidated Statement of Cash Flows
								Inception through
								March 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(82,789	)	(1,377	)	(84,166	)
							Accrued liabilities	386		471		857
							Net cash used in operating activities	(11,712	)	(906	)	(12,618	)
							Investing activities:
							Mineral properties	(1,997	)	906		(1,091	)
							Net cash used in investing activities	(2,086	)	906		(1,180	)
							Consolidated Balance Sheet
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	20,067		(7,877	)	12,190
							Total noncurrent assets	20,371		(7,877	)	12,494
							Total assets	22,071		(7,877	)	14,194
							SHAREHOLDER’S EQUITY
							Common stock	39		(39	)	—
							Additional paid-in capital	86,719		39		86,758
							Losses accumulated in exploration stage	(83,032	)	(3,939	)	(86,971	)
							Total shareholder’s equity - Prospect Global Resources, Inc.	4,727		(3,938	)	789
							Non-controlling interest	7,915		(3,939	)	3,976
							Total shareholder’s equity	12,642		(7,877	)	4,765
							Total liabilities and shareholder’s equity	22,071		(7,877	)	14,194
							Consolidated Statement of Operations
								Three months ended
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,568		5,568
							General and administrative	3,328		932		4,260
							Total expenses	3,328		6,500		9,828
							Loss from operations	(3,328	)	(6,500	)	(9,828	)
							Net loss	(3,328	)	(6,500	)	(9,828	)
							Net loss attributable to non-controlling interest	7		3,250		3,257
							Net loss attributable to Prospect Global Resources, Inc.	(3,321	)	(3,250	)	(6,571	)
							Loss per share - basic and diluted	(4.20	)	(4.12	)	(8.32	)
							Consolidated Statement of Operations
								Inception through June
								30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		6,616		12,216
							General and administrative	21,692		1,261		22,953
							Total expenses	27,292		7,877		35,169
							Loss from operations	(27,292	)	(7,877	)	(35,169	)
							Net loss	(86,117	)	(7,877	)	(93,994	)
							Net loss attributable to non-controlling interest	3,085		3,939		7,024
							Net loss attributable to Prospect Global Resources, Inc.	(83,032	)	(3,938	)	(86,970	)
							Loss per share - basic and diluted	(164.42	)	(7.80	)	(172.22	)
							Consolidated Statement of Cash Flows
								Three months ended
								June 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(3,328	)	(6,500	)	(9,828	)
							Accounts payable	434		1,722		2,156
							Accrued liabilities	258		1,088		1,346
							Net cash used in operating activities	(2,079	)	(3,690	)	(5,769	)
							Investing activities:
							Mineral properties	(3,788	)	3,690		(98	)
							Net cash used in investing activities	(8,937	)	3,690		(5,247	)
							Consolidated Statement of Cash Flows
								Inception through June
								30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(86,117	)	(7,877	)	(93,994	)
							Accounts payable	1,106		1,723		2,829
							Accrued liabilities	644		1,559		2,203
							Net cash used in operating activities	(13,292	)	(4,595	)	(17,887	)
							Investing activities:
							Mineral properties	(5,784	)	4,595		(1,189	)
							Net cash used in investing activities	(11,523	)	4,595		(6,928	)
							Consolidated Balance Sheet
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	29,036		(16,846	)	12,190
							Total noncurrent assets	29,638		(16,846	)	12,792
							Total assets	41,604		(16,846	)	24,758
							SHAREHOLDER’S DEFICIT
							Common stock	55		(55	)	—
							Additional paid-in capital	1,275		(4,691	)	(3,416	)
							Losses accumulated in exploration stage	(96,977	)	(12,100	)	(109,077	)
							Total shareholder’s (deficit) - Prospect Global Resources, Inc.	(95,646	)	(16,846	)	(112,492	)
							Total shareholder’s (deficit)	(95,646	)	(16,846	)	(112,492	)
							Total liabilities and shareholder’s deficit (deficit)	41,604		(16,846	)	24,758
							Consolidated Statement of Operations
								Three months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,802		5,802
							General and administrative	12,080		3,167		15,247
							Total expenses	12,080		8,969		21,049
							Loss from operations	(12,080	)	(8,969	)	(21,049	)
							Net loss	(13,951	)	(8,969	)	(22,920	)
							Net loss attributable to non-controlling interest	6		807		813
							Net loss attributable to Prospect Global Resources, Inc.	(13,945	)	(8,162	)	(22,107	)
							Loss per share - basic and diluted	(12.75	)	(7.46	)	(20.21	)
							Consolidated Statement of Operations
								Six Months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		11,370		11,370
							General and administrative	15,408		4,099		19,507
							Total expenses	15,408		15,469		30,877
							Loss from operations	(15,408	)	(15,469	)	(30,877	)
							Net loss	(17,279	)	(15,469	)	(32,748	)
							Net loss attributable to non-controlling interest	13		4,057		4,070
							Net loss attributable to Prospect Global Resources, Inc.	(17,266	)	(11,412	)	(28,678	)
							Loss per share - basic and diluted	(18.31	)	(12.10	)	(30.41	)
							Consolidated Statement of Operations
								Inception through
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		12,418		18,018
							General and administrative	33,771		4,428		38,199
							Total expenses	39,371		16,846		56,217
							Loss from operations	(39,371	)	(16,846	)	(56,217	)
							Net loss	(100,068	)	(16,846	)	(116,914	)
							Net loss attributable to non-controlling interest	3,091		4,746		7,837
							Net loss attributable to Prospect Global Resources, Inc.	(96,977	)	(12,100	)	(109,077	)
							Loss per share - basic and diluted	(168.66	)	(21.04	)	(189.70	)
							Consolidated Statement of Cash Flows
								Six months ended
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities
							Net loss	(17,279	)	(15,469	)	(32,748	)
							Stock based compensation and warrant expense	8,228		2,454		10,682
							Account payable	(249	)	2,348		2,099
							Accrued liabilities	980		1,680		2,660
							Net cash used in operating activities	(5,719	)	(8,987	)	(14,706	)
							Investing activities
							Mineral properties	(9,085	)	8,987		(98	)
							Net cash used in investing activities	(9,481	)	8,987		(494	)
							Consolidated Statement of Cash Flows
								Inception through
								September 30, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating Activities:
							Net loss	(100,068	)	(16,846	)	(116,914	)
							Stock based compensation	17,946		2,454		20,400
							Account payable	423		2,348		2,771
							Accrued liabilities	1,365		2,151		3,516
							Net cash used in operating activities	(17,430	)	(9,893	)	(27,323	)
							Investing Activities:
							Mineral Properties	(11,082	)	9,893		(1,189	)
							Net cash used in investing activities	(11,567	)	9,893		(1,674	)
							Consolidated Balance Sheet
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							ASSETS
							Mineral properties	35,991		(23,801	)	12,190
							Deferred fees	7,751		(7,751	)	—
							Total noncurrent assets	44,517		(31,554	)	12,963
							Total assets	55,304		(31,554	)	23,750
							SHAREHOLDER’S DEFICIT
							Common stock	73		(72	)	1
							Additional paid-in capital	34,265		(5,046	)	29,219
							Losses accumulated in exploration stage	(116,727	)	(26,436	)	(143,163	)
							Total shareholder’s deficit - Prospect Global Resources, Inc.	(82,390	)	(31,554	)	(113,944	)
							Non-controlling interest	—		—		—
							Total shareholder’s deficit	(82,390	)	(31,554	)	(113,944	)
							Total liabilities and shareholder’s deficit	55,304		(31,554	)	23,750
							Consolidated Statement of Operations
								Three months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		5,646		5,646
							General and administrative	15,110		937		16,047
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	15,110		14,334		29,444
							Loss from operations	(15,110	)	(14,334	)	(29,444	)
							Net loss	(19,751	)	(14,334	)	(34,085	)
							Net loss attributable to non-controlling interest	—		—		—
							Net loss attributable to Prospect Global Resources, Inc.	(19,751	)	(14,334	)	(34,085	)
							Loss per share - basic and diluted	(15.36	)	(11.14	)	(26.50	)
							Consolidated Statement of Operations
								Nine Months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	—		17,016		17,016
							General and administrative	30,518		5,036		35,554
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	30,518		29.803,		60,321
							Loss from operations	(30,518	)	(29,803	)	(60,321	)
							Net loss	(37,030	)	(29,803	)	(66,833	)
							Net loss attributable to non-controlling interest	12		4,057		4,069
							Net loss attributable to Prospect Global Resources, Inc.	(37,018	)	(25,746	)	(62,764	)
							Loss per share - basic and diluted	(34.99	)	(24.33	)	(59.32	)
							Consolidated Statement of Operations
								Inception through
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Exploration	5,600		18,064		23,664
							General and administrative	48,881		5,365		54,246
							Off-take arrangement fee	—		7,751		7,751
							Total expenses	54,481		31,180		85,661
							Loss from operations	(54,481	)	(31,180	)	(85,661	)
							Net loss	(119,819	)	(31,180	)	(150,999	)
							Net loss attributable to non-controlling interest	3,091		4,746		7,837
							Net loss attributable to Prospect Global Resources, Inc.	(116,728	)	(23,434	)	(140,162	)
							Loss per share - basic and diluted	(182.10	)	(36.56	)	(218.66	)
							Consolidated Statement of Cash Flows
								Nine months ended
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities:
							Net loss	(37,030	)	(29,803	)	(66,833	)
							Services paid for with securities	672		3,875		4,547
							Stock based compensation	12,649		2,578		15,227
							Deferred fees	(1,938	)	1,938		—
							Accounts payable	(1,773	)	3,191		1,418
							Accrued liabilities	1,781		2,780		4,561
							Net cash used in operating activities	(12,650	)	(15,441	)	(28,091	)
							Investing activities:
							Mineral properties	(15,539	)	15,441		(98	)
							Net cash used in investing activities	(16,181	)	15,441		(740	)
							Consolidated Statement of Cash Flows
								Inception through
								December 31, 2012
								As Reported		Adjustment		As Restated
								($000’s)		($000’s)		($000’s)
							Operating activities
							Net loss	(119,819	)	(31,180	)	(150,999	)
							Services paid for with securities	3,052		3,876		6,928
							Stock based compensation	22,367		2,578		24,945
							Deferred fees	(1,938	)	1,938		—
							Accounts payable	(1,101	)	3,191		2,090
							Accrued liabilities	2,165		3,252		5,417
							Net cash used in operating activities	(24,363	)	(16,345	)	(40,708	)
							Investing activities
							Mineral properties	(17,535	)	16,345		(1,190	)
							Net cash used in investing activities	(18,266	)	16,345		(1,921	)

Organization_and_Business_Oper3

Organization and Business Operations (Details) (USD $)	6 Months Ended	12 Months Ended		1 Months Ended	0 Months Ended	11 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2013	Aug. 01, 2012	Jul. 31, 2011	Aug. 01, 2012	Nov. 30, 2011
	item	AWP	AWP	AWP	AWP	AWP
				Sharing agreement	Karlsson	Karlsson
				item		Operating Agreement
				acre		item
						acre
Organization and Business Operations	'	'	'	'	'	'
Amount of cash contributions made	'	$11	'	'	'	$11
Number of private sections	101	'	'	'	'	'
Number of Arizona state sections on which permits are held	38	'	'	'	'	42
Area transferred in exchange for equity interest (in acres)	'	'	'	'	'	31,000
Ownership percentage	'	'	50.00%	'	'	50.00%
Number of private mineral estate sections covered	'	'	'	101	'	'
Area of private mineral leases related to private mineral estates covered (in acres)	'	'	'	62,000	'	'
Ownership percentage acquired from Karlsson Group	'	'	'	'	50.00%	'

Organization_and_Business_Oper4

Organization and Business Operations (Details 2)	6 Months Ended	12 Months Ended	0 Months Ended	12 Months Ended	0 Months Ended
	Sep. 30, 2013	Dec. 31, 2011	Jan. 21, 2011	Dec. 31, 2011	Jul. 27, 2011
	item	AWP	AWP	AWP	AWP
		item	Operating Agreement	Operating Agreement	Sharing agreement
			acre	item	acre
			item		item
Organization and Business Operations	'	'	'	'	'
Number of Arizona state sections on which permits are held	38	'	38	'	'
Number of private sections	101	'	8	'	'
Number of private mineral estate sections covered	'	'	101	'	101
Mineral leases, acres	'	'	90,000	'	'
Term of state permit	'	'	5	'	'
Number of state permits that expire in 2014	'	'	15	'	'
Number of state permits that expire in 2015	'	'	23	'	'
2D seismic data acquired (in miles)	'	70	'	'	'
Number of holes of which drilling and coring completed	'	12	'	'	'
Number of holes in project area	'	'	'	58	'
Number of mineral estate sections covered under the company's existing mineral rights	'	'	'	'	50
Area of private mineral leases adjacent to or in close proximity to existing mineral rights (in acres)	'	'	'	'	62,000
Number of consecutive days of cessation of operations for termination of agreement	'	'	'	'	'180 days

Organization_and_Business_Oper5

Organization and Business Operations (Details 3) (USD $)	6 Months Ended			6 Months Ended	0 Months Ended
	Sep. 30, 2013	Jul. 01, 2013	Mar. 31, 2013	Sep. 30, 2013	Jun. 26, 2013	Apr. 15, 2013	Apr. 15, 2013	Jun. 26, 2013	Jun. 26, 2013	2-May-13	Apr. 15, 2013
				Karlsson Group	Karlsson Group	Karlsson Group	Karlsson Group	Karlsson Group	Karlsson Group	Two stockholders	Karlsson and Apollo
					Karlsson Note Amendment	Karlsson Note Amendment	Karlsson Note Amendment	Second Extension Agreement	Second Extension Agreement	Bridge Loan	Second Extension Agreement
					Subsequent Events	Subsequent Events	Forecast	Subsequent Events	Subsequent Events	Subsequent Events	Subsequent Events
							By August 1, 2014		Minimum		Apollo Notes
							Subsequent Events		item
Short-Term Liquidity and Capital Needs	'	'	'	'	'	'	'	'	'	'	'
Cash	'	'	$1,000,000	'	'	'	'	'	'	'	'
Working capital deficit	23,700,000	'	-144,700,000	'	'	'	'	'	'	'	'
Accounts payable and accrued liabilities	4,628,000	'	14,607,000	'	'	'	'	'	'	'	'
Indebtedness	'	'	128,300,000	'	'	'	'	'	'	'	'
Number of wells on which the complete total depth milestone is required	'	'	'	'	'	'	'	'	8	'	'
Percentage of additional proceeds required to place in escrow	0.5	'	'	0.5	'	'	'	0.5	'	'	'
Capital raised, a portion of which is required to be deposited into escrow	'	'	'	'	'	30,000,000	'	24,000,000	'	'	'
Escrow deposit required	9,400,000	'	'	9,400,000	'	9,200,000	'	12,000,000	'	'	'
Proceeds from public offering placed into escrow	'	'	'	'	2,100,000	'	'	2,000,000	'	'	'
Proceeds from public offering	'	'	'	'	'	'	'	5,000,000	'	'	'
Remaining escrow obligation	'	'	'	'	'	'	'	10,000,000	'	'	'
Principal payments payable expressed as a percentage of capital raised	'	'	'	'	'	'	'	'	'	'	10.00%
Capital raising milestones	'	'	'	'	'	'	25,000,000	'	'	'	'
Borrowings	'	'	'	'	'	'	'	'	'	5,500,000	'
Available cash	'	1,400,000	'	'	'	'	'	'	'	'	'
Escrowed cash	353,000	2,400,000	'	'	'	'	'	'	'	'	'
Net proceeds received from shareholder rights offering	'	$4,100,000	'	'	'	'	'	'	'	'	'

Summary_of_Significant_Account5

Summary of Significant Accounting Principles (Details) (USD $)	12 Months Ended		12 Months Ended				12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2013	Aug. 01, 2012	Mar. 31, 2013	Mar. 31, 2013	Sep. 30, 2013	Mar. 31, 2013	Aug. 01, 2012
	item		Equipment	Equipment	Karlsson Group	Karlsson Group	Old Prospect Global	AWP	AWP	AWP	AWP
			Minimum	Maximum					Karlsson Group	Karlsson Group	Karlsson Group
Principles of Consolidation	'	'	'	'	'	'	'	'	'	'	'
Percentage of ownership interest held	'	'	'	'	'	'	100.00%	100.00%	'	'	'
Percentage of ownership interest held by non-controlling owners	'	'	'	'	50.00%	50.00%	'	'	50.00%	50.00%	50.00%
Exploration Stage	'	'	'	'	'	'	'	'	'	'	'
Number of mineral properties having proven or probable reserves	0	'	'	'	'	'	'	'	'	'	'
Cash and Cash Equivalents	'	'	'	'	'	'	'	'	'	'	'
Cash equivalents	$0	$0	'	'	'	'	'	'	'	'	'
Equipment	'	'	'	'	'	'	'	'	'	'	'
Estimated useful lives of assets	'	'	'2 years	'10 years	'	'	'	'	'	'	'
Income Taxes	'	'	'	'	'	'	'	'	'	'	'
Penalties or interest recognized in the statement of operations	0	'	'	'	'	'	'	'	'	'	'
Penalties or interest accrued on the balance sheet	$0	'	'	'	'	'	'	'	'	'	'

The_Karlsson_Group_Acquisition1

The Karlsson Group Acquisition (Details) (USD $)	0 Months Ended						0 Months Ended			12 Months Ended
	Aug. 01, 2012	30-May-12	30-May-12	Aug. 01, 2012	30-May-12	30-May-12	30-May-12	30-May-12	30-May-12	Mar. 31, 2013
	Karlsson Group	Karlsson Group	Karlsson Group	Karlsson Group	Karlsson Group	AWP	AWP	AWP	AWP	AWP
			Warrant	Senior secured promissory note	Senior secured promissory note		Karlsson Group	Karlsson Group	Karlsson Group	Affiliate of Karlsson Group
								Forecast	Forecast	acre
									Minimum
Acquisition	'	'	'	'	'	'	'	'	'	'
Interest acquired (as a percent)	'	'	'	'	'	50.00%	'	'	'	'
Cash paid to acquire the entity	'	$6,000,000	'	'	'	'	'	'	'	'
Amount credited against purchase price	'	5,500,000	'	'	'	'	'	'	'	'
Number of common stock that can be purchased against warrants (in shares)	'	'	112,117	'	'	'	'	'	'	'
Exercise price (in dollars per share)	'	'	$212.50	'	'	'	'	'	'	'
Additional cash paid to acquire the entity	'	19,500,000	'	'	'	'	'	'	'	'
Face value	'	'	'	125,000,000	125,000,000	'	'	'	'	'
Royalty as a percentage of gross sales granted	2.00%	'	'	'	'	'	1.00%	'	'	'
Cap amount of royalty granted as a percentage of gross sales	'	'	'	'	'	'	75,000,000	'	'	'
Royalty as a percentage of net proceeds from future sale or merger of AWP	'	'	'	'	'	'	'	15.00%	'	'
Cap amount of royalty granted as a percentage of net proceeds from future sale or merger of AWP	'	'	'	'	'	'	'	75,000,000	'	'
Percent of AWP in a future sale on or before August 1, 2016 required for additional payment to The Karlsson Group	'	'	'	'	'	'	'	'	50.00%	'
Period within which the option to purchase the area may be exercised	'	'	'	'	'	'	'	'	'	'150 days
Area for which the entity received purchase option (in acres)	'	'	'	'	'	'	'	'	'	5,080
Purchase price of area for which the entity received purchase option	'	'	'	'	'	'	'	'	'	$250,000

Other_Current_Assets_Details1

Other Current Assets (Details) (USD $)	6 Months Ended		12 Months Ended	32 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2012
Other Current Assets	'	'	'	'	'
Prepaid insurance & rent	$281	'	$276	$276	$223
Other	40	'	389	389	605
SK Land Holdings Option	-500	500	500	500	'
Total other current assets	$321	'	$1,165	$1,165	$828

Recovered_Sheet2

Off-take Arrangement Fee (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended	29 Months Ended	32 Months Ended				0 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013	Sep. 30, 2013	Sep. 03, 2013	Mar. 31, 2012	Oct. 18, 2012	Mar. 31, 2013
									Off-take agreement	Off-take agreement
									Sichuan	Sichuan
									t
Off-take arrangement fees	'	'	'	'	'	'	'	'	'	'
Minimum purchase obligation (in metric tonnes)	'	'	'	'	'	'	'	'	500,000	'
Period of purchase commitment starting with the commencement of production at Holbrook, Arizona facility	'	'	'	'	'	'	'	'	'	'10 years
One-time third party arrangement fee	'	'	'	'	'	'	'	'	$7,800,000	'
One-time third party off-take arrangement fee	7,751,000	7,751,000	7,751,000	7,751,000	7,751,000	'	'	'	'	'
Third party arrangement fee payable as a percentage of cash	'	'	'	'	'	'	'	'	50.00%	'
Third party arrangement fee payable as a percentage of common stock	'	'	'	'	'	'	'	'	50.00%	'
One-time third party arrangement fee payable in common stock shares	'	'	'	'	'	'	'	'	33,125	'
Number of shares of common stock issued	'	'	1,451,914	'	1,451,914	4,174,039	114,969,415	789,783	'	33,125
Amount paid to third party	'	'	'	'	'	'	'	'	'	2,300,000
Remaining amount payable included in accrued liabilities	'	'	$11,758,000	'	$11,758,000	'	'	$844,000	'	$1,600,000

Accounts_Payable_and_Accrued_L5

Accounts Payable and Accrued Liabilities (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013	Mar. 31, 2012
In Thousands, unless otherwise specified
Accounts Payable and Accrued Liabilities	'	'	'
Drilling/permitting	$543	$140	$471
Mineral lease obligations	'	1,500	'
Legal	664	112	280
Vacation, bonuses and severance pay	'	982	27
Board of directors fees	'	125	'
Off-take arrangement fee	50	1,588	'
Interest on promissory notes	'	7,229	'
Other	'	82	66
Total accrued liabilities	'	$11,758	$844

Debt_Details

Debt (Details) (USD $)

12 Months Ended

0 Months Ended

1 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

12 Months Ended

Mar. 31, 2013

Sep. 30, 2013

Aug. 01, 2012

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Apr. 15, 2013

Aug. 01, 2012

Nov. 30, 2012

Sep. 30, 2013

Mar. 31, 2013

30-May-12

Aug. 01, 2012

Aug. 01, 2012

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2013

Mar. 07, 2013

Mar. 31, 2013

Sep. 30, 2013

AWP

Apollo Notes

Apollo Notes

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Affiliates of Apollo Global Management, LLC

Affiliates of Apollo Global Management, LLC

Affiliates of Apollo Global Management, LLC

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Senior secured promissory note

Apollo Notes

Apollo Notes

Apollo Notes

item

March 30, 2013 Installment Due

July 31, 2013 Installment Due

AWP

AWP

Old Prospect Global

item

Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total debt

$128,258,000

$141,851,000

'

$6,750,000

$6,750,000

$152,600,000

'

'

'

$117,472,000

$115,282,000

'

'

'

'

'

'

'

'

$7,200,000

Tax gross-up

6,226,000

1,164,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,200,000

'

'

'

Less: current portion

-128,258,000

-1,164,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Face value

'

'

'

'

'

'

'

125,000,000

'

'

'

125,000,000

'

'

'

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

'

'

9.00%

9.00%

'

'

'

'

'

'

'

'

'

'

'

11.00%

Principal payments made

'

'

'

'

'

'

'

'

9,700,000

'

'

'

'

'

'

'

'

'

'

'

Principal payments payable expressed as percentage of net proceeds

40.00%

'

'

'

'

'

40.00%

'

40.00%

'

'

'

'

'

'

'

'

'

33.00%

'

Number of installments in which principal amount is payable

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

Periodic principal payment (in dollars)

'

'

'

'

'

'

'

'

'

'

'

'

40,300,000

75,000,000

'

'

'

'

'

'

Period for mandatory pre-payment of debt

'

'

'

'

'

'

'

'

'

'5 days

'5 days

'

'

'

'

'

'

'

'

'

Minimum ownership percentage to avoid pre-payment

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

50.00%

50.00%

'

'

'

'

Note payable including tax gross-up, accrued interest and the remaining unpaid principal balance

'

'

'

'

'

'

'

'

'

'

128,700,000

'

'

'

'

'

'

'

'

'

Prepayment Option

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of principal to be paid for satisfaction of balance of debt on or before December 15, 2012

'

'

'

'

'

'

'

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Estimated fair value of Prepayment Option

'

'

'

'

'

'

'

1,900,000

'

'

0

'

'

'

'

'

'

'

'

'

Change in fair value of the Prepayment Option

'

'

'

'

'

'

'

'

'

'

1,900,000

'

'

'

'

'

'

'

'

'

Payment of notes payable in cash

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

800,000

'

'

Number of promissory notes issued

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

Payment of debt instrument

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6,800,000

'

'

Apollo reimbursement expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$2,200,000

'

'

Interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11.00%

'

Convertible_Notes_Details

Convertible Notes (Details) (USD $)	12 Months Ended		0 Months Ended			0 Months Ended				0 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Feb. 11, 2011	Nov. 22, 2011	Nov. 22, 2011	Nov. 22, 2011	Apr. 25, 2011	Mar. 31, 2012	Nov. 22, 2011	Nov. 22, 2011	Sep. 19, 2011
			2010 Convertible Notes	$2.0 million face value secured convertible note due January 24, 2012	$0.5 million COR Secured Convertible Note	$2.5 million Hexagon Secured Convertible Note	$2.5 million Hexagon Secured Convertible Note	$1.5 million Avalon Secured Convertible Note	$1.5 million Avalon Secured Convertible Note	$1.5 million Hexagon Secured Convertible Note	$1.5 million Hexagon Secured Convertible Note
			Prospect Global Acquisition Inc.
Convertible Notes	'	'	'	'	'	'	'	'	'	'	'
Convertible notes	$0	$0	$1,048,863	'	'	'	'	'	'	'	'
Convertible notes and accrued interest converted into common stock (in shares)	'	'	7,171	'	'	17,630	'	'	'	7,981	'
Face value	'	'	'	$2,000,000	$500,000	$2,500,000	$2,500,000	$1,500,000	$1,500,000	$1,500,000	$1,500,000

Convertible_Notes_Details_2

Convertible Notes (Details 2) (USD $)

6 Months Ended

12 Months Ended

32 Months Ended

38 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

12 Months Ended

32 Months Ended

Sep. 30, 2013

Mar. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Jan. 24, 2011

Mar. 31, 2012

Mar. 31, 2012

Mar. 11, 2011

Apr. 25, 2011

Mar. 31, 2012

Aug. 03, 2011

Mar. 31, 2012

Nov. 22, 2011

Sep. 19, 2011

Mar. 31, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Merkin Note $2.0 million Face Value

Merkin Note $2.0 million Face Value

COR Note $0.5 million Face Value

COR Note $0.5 million Face Value

Hexagon Note $2.5 million Face Value

Hexagon Note $2.5 million Face Value

Avalon Note $1.5 million Face Value

Avalon Note $1.5 million Face Value

Avalon Note $1.5 million Face Value

Second Hexagon Note $1.5 million Face Value

Second Hexagon Note $1.5 million Face Value

Secured Convertible Notes

Secured Convertible Notes

Secured Convertible Notes

Convertible Notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds

'

'

'

'

'

($2,000,000)

($500,000)

'

'

($2,500,000)

'

($1,500,000)

($1,500,000)

'

($1,500,000)

'

'

'

Proceeds

-5,000,000

-5,500,000

-9,049,000

-14,049,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Compound embedded derivative

650,000

'

'

650,000

10,068,000

'

'

333,000

460,000

'

708,000

'

'

432,000

'

'

'

'

Warrant derivative liability

'

'

'

'

'

'

'

'

3,954,000

'

5,147,000

'

'

2,135,000

'

'

'

'

Day-one derivative gain (loss)

'

'

'

'

-8,068,000

'

'

'

-1,914,000

'

-4,355,000

'

'

-1,067,000

'

'

'

'

Carrying value

'

'

'

'

'

'

'

167,000

'

'

'

'

'

'

'

'

'

'

Amortization of debt discounts (premiums)

$8,199,000

'

'

$8,199,000

'

'

'

'

'

'

'

'

'

'

'

'

$1,500,000

$1,600,000

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Details) (USD $)

3 Months Ended

6 Months Ended

12 Months Ended

32 Months Ended

38 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

8 Months Ended

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Mar. 31, 2013

Aug. 01, 2012

Mar. 31, 2012

Mar. 31, 2013

Mar. 31, 2012

Jan. 24, 2011

Apr. 25, 2011

Aug. 03, 2011

Sep. 19, 2011

Mar. 31, 2012

Mar. 31, 2013

Mar. 31, 2011

Karlsson Group

Karlsson Group

Compound embedded derivatives

Compound embedded derivatives

Day-one derivative losses

Day-one derivative losses

Day-one derivative losses

Day-one derivative losses

Day-one derivative losses

Warrant derivative liabilities

Warrant derivative liabilities

Secured Convertible Notes

Senior secured promissory note

Senior secured promissory note

$2.0 million face value secured convertible note due January 24, 2012

$2.5 million face value secured convertible note due April 24, 2012

$1.5 million face value secured convertible note due August 3, 2012

$1.5 million face value secured convertible note due September 18, 2012

Derivative Financial Instruments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative assets

'

'

$0

$0

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated fair value of Prepayment Option

'

'

'

'

'

'

0

1,900,000

'

'

'

'

'

'

'

'

'

'

Fair values of the compound derivatives and the warrant liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total derivative loss

($1,388,000)

$1,512,000

($1,900,000)

($39,810,000)

($56,666,000)

($55,154,000)

'

'

($23,525,000)

'

($7,336,000)

($8,068,182)

($1,914,322)

($4,354,600)

($1,067,188)

($8,949,000)

'

$0

Derivative_Financial_Instrumen5

Derivative Financial Instruments (Details 2) (Derivative Financial Information, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2012
Derivative Financial Information	'
Reconciliation of changes in the fair value of financial liabilities classified as Level 3 in the fair valued hierarchy	'
Balance at the beginning of the period	($17,288)
Total gains or losses (realized or unrealized) included in earnings	-20,956
Warrant issuances	-12,396
Warrant reclassification to equity	20,228
Debenture issuances	-12,001
Debenture conversions	$42,413

Grandhaven_Option_Details

Grandhaven Option (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013	Mar. 31, 2012	Nov. 22, 2011
In Thousands, unless otherwise specified				Hexagon
				item
Grandhaven Option	'	'	'	'
Number of transactions completed	'	'	'	2
Overriding royalty interest (as a percent)	'	'	'	1.00%
Fair value of Grandhaven Option upon issuance	$4,060	$4,060	$4,060	$4,100

Related_Party_Transactions_Det1

Related Party Transactions (Details) (USD $)

6 Months Ended

12 Months Ended

32 Months Ended

38 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

32 Months Ended

38 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

6 Months Ended

12 Months Ended

32 Months Ended

38 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

0 Months Ended

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Sep. 03, 2013

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2012

Nov. 22, 2011

Nov. 22, 2011

Apr. 25, 2011

Mar. 31, 2013

Mar. 31, 2013

Nov. 22, 2011

Sep. 19, 2011

Nov. 01, 2013

Oct. 06, 2013

Oct. 02, 2013

Nov. 01, 2013

Mar. 31, 2013

Mar. 31, 2013

Sep. 19, 2011

Sep. 30, 2013

Mar. 31, 2013

Aug. 01, 2012

Sep. 30, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Apr. 15, 2013

Aug. 01, 2012

Aug. 01, 2012

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Mar. 31, 2013

Aug. 01, 2012

Nov. 13, 2013

31-May-13

Sep. 30, 2013

31-May-13

Jul. 31, 2011

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Jul. 02, 2012

31-May-13

Nov. 22, 2011

Nov. 22, 2011

Sep. 30, 2013

Mar. 31, 2013

Nov. 22, 2011

Sep. 30, 2013

Sep. 30, 2013

Nov. 22, 2011

Jul. 05, 2012

Sep. 30, 2013

2-May-13

Options

Options

Options

Secured convertible notes held by COR

$2,500,000 Hexagon Secured Convertible Note

$2,500,000 Hexagon Secured Convertible Note

$2,500,000 Hexagon Secured Convertible Note

$2,500,000 Hexagon Secured Convertible Note

$1,500,000 Hexagon Secured Convertible Note

$1,500,000 Hexagon Secured Convertible Note

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Maximum

Maximum

Maximum

Quincy Prelude LLC

Quincy Prelude LLC

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Mr. Brownstein's father

Mr. Brownstein's father

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Brownstein Hyatt Farber Schreck, LLP

Hexagon

Grandhaven

Grandhaven

Grandhaven

Grandhaven

Grandhaven

Very Hungry LLC [Member]

Very Hungry LLC [Member]

Very Hungry LLC [Member]

Very Hungry and the Scott Reiman 1991 Trust

Very Hungry and the Scott Reiman 1991 Trust

item

First Warrant exercisable until April 25, 2013

Second Warrant exercisable until April 25, 2014

warrant

warrant

warrant

$2,500,000 Hexagon Secured Convertible Note

$2,500,000 Hexagon Secured Convertible Note

$1,500,000 Hexagon Secured Convertible Note

Common Stock

Common Stock

Subsequent Events

Warrant issued in connection with services for public offering

Warrant issued in connection with terminating right to future transaction fee

Barry Munitz

Barry Munitz

Quincy Prelude LLC

Quincy Prelude LLC

AWP

Secured convertible notes held by COR

Subsequent Events

Conway Schatz

AWP

AWP

Very Hungry warrant exercisable through August 5, 2013

Common Stock

Subsequent Events

First Warrant exercisable until April 25, 2013

Second Warrant exercisable until April 25, 2014

Minimum

Minimum

Warrant issued for fee in connection with the acquisition

Director Plan

Options

Bridge Loan

Options

Related Party Transactions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Beneficial ownership held by stockholder in reporting entity (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Voting interest held by a stockholder in a related party (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Economic interest held by a stockholder in a related party (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

82.50%

75.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-voting economic interest held by a stockholder in a related party (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

17.50%

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount paid to related party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,100,000

$1,100,000

$300,000

$1,400,000

$1,400,000

'

'

'

'

'

'

'

$975,000

'

'

'

'

'

$1,400,000

$1,700,000

$3,600,000

$500,000

$4,300,000

$5,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of common stock that can be purchased against warrants (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

13,333

50,000

19,608

'

'

52,409

'

'

'

'

'

'

5,366

40,000

'

'

'

'

7,043

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

51,765

'

2,409,402

'

Exercise price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

$150

$150

'

$191.50

'

'

'

'

'

'

'

'

'

$130

'

'

'

'

'

'

$130

$130

'

'

'

'

$130

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$212.50

'

'

$15

Fee payable in connection with acquisition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares of common stock issued

4,174,039

1,451,914

789,783

1,451,914

4,174,039

114,969,415

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

308,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

891,112

'

96,154

1,090,198

'

Consulting fee payable per month

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual management fee payable as a percentage of annual gross revenues

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.00%

'

2.00%

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$130

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$130

'

'

'

'

'

'

'

'

'

$130

'

'

Extension period in the event of a change of control

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of the warrant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Significant inputs used in estimation of fair value of the warrant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated volatility (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

177.26%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Risk free rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.61%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividends (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares controlled by related party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

105,998

35,563

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,800

'

'

'

'

'

'

'

Amount due to related party included in accrued liabilities and account payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

25,000

'

0

'

'

'

'

'

'

'

'

'

'

500,000

'

'

500,000

800,000

800,000

300,000

800,000

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Term of options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares issued to a related party

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

49,875

15,640

6,000

'

'

'

'

'

'

2,400

15,640

'

'

'

'

'

'

'

'

'

'

'

Amount payable to related party for services rendered

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

'

'

400,000

'

200,000

'

200,000

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Authorized shares under each demand registration for demand and piggy-back registration rights under the amended registration rights agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

22,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest acquired (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Face value

'

'

'

'

'

'

'

'

'

500,000

2,500,000

2,500,000

'

'

1,500,000

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net proceeds

5,000,000

'

5,500,000

9,049,000

14,049,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible notes converted into number of common stock (in shares)

'

'

'

'

'

'

'

'

'

'

17,630

'

'

'

7,981

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of warrants issued

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

200

'

200

400

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares of common stock sold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

51,765

'

'

'

Total cash proceeds

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,000,000

'

'

'

Overriding royalty interest (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

1.00%

1.00%

'

'

'

'

'

'

'

'

Amount granted to a related party in exchange of overriding royalty interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25,000

'

'

'

'

'

'

'

'

'

Assigned royalty interest (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.39%

1.39%

'

'

'

'

'

Purchase price per common stock (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$212.50

'

'

'

'

'

'

Exercise price (in dollars per share)

'

'

'

'

'

'

$160.83

$160.71

$212.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$130

'

'

'

'

'

'

'

Total cash proceeds from public offering

805,000

66,290,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,500,000

'

'

Amount borrowed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

Amount of unsecured subordinated promissory notes exchanged

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$5,500,000

Equity_Based_Compensation_Deta1

Equity Based Compensation (Details) (USD $)

6 Months Ended

12 Months Ended

32 Months Ended

6 Months Ended

12 Months Ended

32 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

32 Months Ended

12 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2013

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2013

Aug. 27, 2012

Mar. 31, 2013

Aug. 27, 2012

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Stock Options

Warrants Issued for Services

Warrants Issued for Services

Warrants Issued for Services

Warrants Issued for Services

Warrants Issued for Services

Employee Plan

Employee Plan

Director Plan

Director Plan

Minimum

Minimum

Maximum

Maximum

Minimum

Maximum

Stock Options

Stock Options

Stock Options

Stock Options

Equity Based Compensation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares authorized for issuance

'

'

'

'

1,934,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

270,000

'

164,000

Shares remained available for issuance

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

177,340

'

70,500

'

Fair value assumptions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected term

'

'

'

'

'

'

'

'

'

'8 years 2 months 1 day

'5 years

'9 years 6 months 4 days

'9 years 5 months 19 days

'

'

'

'2 years

'5 years

'

'

'

'

Volatility, Minimum (as a percent)

'

'

'

'

113.40%

'

128.57%

'

'

'

'

'

'

106.22%

'

'

'

'

'

'

'

'

Volatility, Maximum (as a percent)

'

'

'

'

181.50%

'

181.46%

'

'

'

'

'

'

177.26%

'

'

'

'

'

'

'

'

Risk-free rate, minimum (as a percent)

'

'

'

'

0.04%

'

0.63%

'

'

'

'

'

'

0.22%

'

'

'

'

'

'

'

'

Risk-free rate, maximum (as a percent)

'

'

'

'

2.43%

'

2.00%

'

'

'

'

'

'

1.52%

'

'

'

'

'

'

'

'

Shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the beginning of the period (in shares)

'

'

'

'

186,000

68,000

68,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Granted (in shares)

'

'

'

'

2,000

'

127,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeited or expired (in shares)

'

'

'

'

-24,060

'

-9,000

'

-43,060

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the end of the period (in shares)

'

'

'

'

164,100

'

186,000

68,000

186,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Vested at the end of the period (in shares)

'

'

'

'

147,767

'

132,000

'

132,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted-Average Exercise Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the beginning of the period (in dollars per share)

'

'

'

'

$160.71

$212.50

$212.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Granted (in dollars per share)

'

'

'

'

$15

'

$130.66

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeited or expired (in dollars per share)

'

'

'

'

$147.87

'

$130

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the end of the period (in dollars per share)

'

'

'

'

$160.83

'

$160.71

$212.50

$160.71

'

'

'

'

'

'

'

'

'

'

'

'

'

Vested at the end of the period (in dollars per share)

'

'

'

'

$163.95

'

$171.67

'

$171.67

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate Intrinsic Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the end of the period (in dollars)

'

'

'

'

'

'

$19,636,000

'

$19,636,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted-Average Remaining Term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the beginning of the period

'

'

'

'

'8 years 6 months 18 days

'

'9 years 7 days

'7 years 8 months 8 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Granted during the period

'

'

'

'

'2 years 1 month 6 days

'

'9 years 4 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding at the end of the period

'

'

'

'

'8 years 6 months 18 days

'

'9 years 7 days

'7 years 8 months 8 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vested the end of the period

'

'

'

'

'8 years 5 months 23 days

'

'8 years 10 months 13 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional disclosures

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average grant date fair value (in dollars per share)

'

'

'

'

$15

$122.50

$95.24

$156.77

$108.43

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested Stock Options, Shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested at the beginning of the period (in shares)

'

'

'

'

54,000

20,000

20,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Granted (in shares)

'

'

'

'

2,000

'

127,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vested (in shares)

'

'

'

'

-25,550

'

-84,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeited (in shares)

'

'

'

'

-14,000

'

-9,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested at the end of the period (in shares)

'

'

'

'

16,333

'

54,000

20,000

54,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested Stock Options, Weighted Average Grant Date Fair Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested at the beginning of the period (in dollars per share)

'

'

'

'

$99.63

$123.48

$123.48

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Granted (in dollars per share)

'

'

'

'

$2.10

'

$95.24

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vested (in dollars per share)

'

'

'

'

$85.80

'

$96.24

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Forfeited (in dollars per share)

'

'

'

'

$130.59

'

$123.10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-vested at the end of the period (in dollars per share)

'

'

'

'

$82.78

'

$99.63

$123.48

$99.63

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional disclosures

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total unrecognized compensation expense (in dollars)

'

'

'

'

400,000

'

2,200,000

'

2,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted-average period over which cost is expected to be recognized

'

'

'

'

'

'

'1 year

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

Stock-based compensation costs

5,100,000

5,600,000

'

'

200,000

2,600,000

10,300,000

9,700,000

16,900,000

'

'

'

'

5,900,000

'

5,900,000

'

'

'

'

'

'

Stock compensation capitalized (in dollars)

'

'

$3,077,000

$3,078,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of common stock that can be purchased against warrants (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

97,936

'

97,936

'

'

'

'

'

'

Exercise price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$62.50

$251

'

'

'

'

Warrants committed for issuance in the next twelve months (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

800

'

800

'

'

'

'

'

'

Shareholders_Equity_Details

Shareholders' Equity (Details) (USD $)	0 Months Ended
	Sep. 04, 2013	Sep. 30, 2013	Sep. 03, 2013	Mar. 31, 2013	Aug. 27, 2012	Mar. 31, 2012
Shareholders' Equity	'	'	'	'	'	'
Reverse stock split	0.02	'	'	'	'	'
Common Stock	'	'	'	'	'	'
Common stock, shares authorized	'	300,000,000	'	300,000,000	300,000,000	100,000,000
Common stock, par value (in dollars per share)	'	$0.00	'	$0.00	'	$0.00
Common stock issued (in shares)	'	4,174,039	114,969,415	1,451,914	'	789,783
Common stock outstanding (in shares)	'	4,174,039	114,969,415	1,451,914	'	789,783
Commitments to issue additional shares of common stock under existing service contracts	'	10,500	'	13,500	'	'
Preferred Stock	'	'	'	'	'	'
Preferred stock, shares authorized	'	'	'	100,000,000	100,000,000	10,000,000
Preferred stock, par value (in dollars per share)	'	'	'	$0.00	'	$0.00
Preferred stock, shares issued	'	'	'	0	'	'

Shareholders_Equity_Details_2

Shareholders' Equity (Details 2) (Investor Warrants, USD $)	12 Months Ended	0 Months Ended	12 Months Ended		12 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2013	2-May-13	Mar. 31, 2013	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2013
		Bridge Loan	Minimum	Minimum	Maximum	Maximum
Warrants	'	'	'	'	'	'
Warrants issued (in shares)	313,058	134,706	'	'	'	'
Exercise price (in dollars per share)	'	'	$150	$4.05	$212.50	$150
Exercise period	'	'	'1 month 6 days	'	'6 years 2 months 12 days	'
Borrowings	'	$5	'	'	'	'

Shareholders_Equity_Details_3

Shareholders' Equity (Details 3) (USD $)	32 Months Ended	38 Months Ended	12 Months Ended				12 Months Ended
	Mar. 31, 2013	Sep. 30, 2013	Mar. 31, 2013	Aug. 01, 2012	Mar. 31, 2013	Aug. 01, 2012	Mar. 31, 2013	Sep. 30, 2013	Aug. 01, 2012
			AWP	AWP	Karlsson Group	Karlsson Group	Karlsson Group	Karlsson Group	Karlsson Group
							AWP	AWP	AWP
Non-Controlling Interest	'	'	'	'	'	'	'	'	'
Contribution of mineral interests	$11,000,000	$11,000,000	'	'	'	'	$11,000,000	'	'
Percentage of ownership interest held by non-controlling owners	'	'	'	'	50.00%	50.00%	50.00%	50.00%	50.00%
Amount of cash contributions made	'	'	$11,000,000	'	'	'	'	'	'
Ownership percentage	'	'	'	50.00%	'	'	'	'	'

Loss_per_Share_Details1

Loss per Share (Details) (USD $)

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

20 Months Ended

23 Months Ended

26 Months Ended

29 Months Ended

32 Months Ended

38 Months Ended

In Thousands, except Share data, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Mar. 31, 2013

Mar. 31, 2012

Mar. 31, 2012

Jun. 30, 2012

Sep. 30, 2012

Dec. 31, 2012

Mar. 31, 2013

Sep. 30, 2013

Loss per Share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net Loss attributable to Prospect Global Resources Inc.

($18,361)

($34,085)

($22,107)

($6,571)

($17,344)

($28,678)

($62,764)

($79,854)

($63,566)

($80,399)

($86,970)

($109,077)

($140,162)

($160,254)

($177,598)

Weighted average number of common shares outstanding - basic

2,737,000

'

1,094,000

'

2,124,000

943,000

'

1,155,000

560,000

'

'

'

'

716,000

1,169,000

Weighted average number of common shares outstanding - fully diluted

2,737,000

'

1,094,000

'

2,124,000

943,000

'

1,155,000

560,000

'

'

'

'

716,000

1,169,000

Loss per share of common stock:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basic and fully diluted loss per share of common stock (in dollars per share)

($6.77)

[1]

($26.50)

($20.21)

[1]

($8.32)

($8.24)

[1]

($30.41)

[1]

($59.32)

($69.14)

[1]

($113.51)

[1]

($174.40)

($172.22)

($189.70)

($218.66)

($223.82)

[1]

($152.06)

[1]

Antidilutive potentially dilutive warrants, grants and options which were not included in the computation of Loss Per Share (in share)

'

'

'

'

7,346,907

'

'

600,000

'

'

'

'

'

'

'

[1]

All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.

Commitments_and_Contingencies_2

Commitments and Contingencies (Details) (USD $)

0 Months Ended

6 Months Ended

12 Months Ended

1 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

Jul. 01, 2013

Jun. 14, 2013

Sep. 30, 2013

Mar. 31, 2013

Nov. 30, 2011

Aug. 01, 2012

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Apr. 15, 2013

Apr. 15, 2013

Apr. 15, 2013

Mar. 31, 2013

Mar. 07, 2013

Sep. 30, 2013

Apr. 15, 2013

Aug. 01, 2012

Mar. 31, 2013

Apr. 15, 2013

Sep. 30, 2013

Mar. 31, 2013

Aug. 01, 2012

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2013

item

Stockholder claims

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Affiliates of Apollo Global Management, LLC

Affiliates of Apollo Global Management, LLC

Affiliates of Apollo Global Management, LLC

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

Buffalo Management Llc [Member]

AWP

AWP

AWP

AWP

AWP

AWP

Senior secured promissory note

Karlsson Note Amendment

Karlsson Note Amendment

Extension Agreement

Extension Agreement

Apollo Notes

Apollo Notes

Extension Agreement

Extension Agreement

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Subsequent Events

Forecast

Subsequent Events

Subsequent Events

Apollo Notes

Maximum

Forecast

Forecast

Forecast

By August 1, 2014

Subsequent Events

Subsequent Events

Minimum

Subsequent Events

Commitments and Contingencies

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Value of shares purchased by shareholder in public offering

'

'

$805,000

$66,290,000

$10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of underwriters

'

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Royalty as a percentage of gross sales granted

'

'

'

'

'

2.00%

'

'

'

'

'

15.00%

15.00%

'

'

'

1.00%

'

'

'

'

'

15.00%

15.00%

'

Percentage of ownership interest held by non-controlling owners

'

'

'

'

'

50.00%

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

50.00%

50.00%

50.00%

'

'

50.00%

Cap amount of royalty granted as a percentage of gross sales

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

75,000,000

75,000,000

'

Principal payments payable expressed as a percentage of gross proceeds

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

10.00%

1.00%

'

'

'

'

'

'

'

'

'

First gross proceeds after which principal payments payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

'

'

'

'

Combined cost of gross-up payments

'

'

'

'

'

'

'

'

'

26,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital raising milestones

'

'

'

'

'

'

'

'

'

'

25,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Escrow deposit required

'

'

9,400,000

'

'

'

9,400,000

'

'

9,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital raised, a portion of which is required to be deposited into escrow

'

'

'

'

'

'

'

'

'

30,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings

'

'

'

'

'

'

'

'

'

'

'

'

'

$6,800,000

'

'

'

'

'

'

'

'

'

'

'

Percentage of royalty interest

'

'

'

'

'

'

'

1.00%

'

'

'

2.00%

'

'

'

'

'

2.00%

'

'

'

'

'

'

'

Percentage of outstanding capital stock issuable to Buffalo

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

Percentage of equity market capitalization redeemable as consideration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

Commitments to issue additional shares of common stock under existing service contracts

'

'

10,500

13,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments to issue additional warrants under existing service contracts

'

'

400

1,600

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments to issue additional shares of common stock under existing service contracts due in quarterly increments

'

'

1,500

1,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments to issue additional warrants under existing service contracts due in monthly tranches

'

'

200

200

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period of each warrant tranche

'

'

'5 years

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments to issue additional shares of common stock under existing service contracts, as of the filing date

1,200

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitments to issue additional warrants under existing service contracts, as of the filing date

800

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Components of income/(loss) from continuing operations before income taxes	'	'
United States	($79,854,000)	($63,566,000)
Total	-79,854,000	-63,566,000
Current deferred tax assets	'	'
Charitable contributions	3,000	'
Accrued bonuses	170,000	'
Accrued severance	138,000	'
Accrued expenses	4,000	10,000
Total current deferred tax assets	315,000	10,000
Non-current deferred tax assets	'	'
Investment in AWP	'	1,085,000
Operating loss carry forward	20,493,000	3,321,000
Start-up costs	100,000	107,000
Stock compensation	7,247,000	3,505,000
Warrant expense	2,161,000	'
Mineral properties	52,625,000	'
Exploration	5,892,000	'
Total non-current deferred tax assets	88,518,000	8,018,000
Valuation allowances	-88,505,000	-7,956,000
Total deferred tax assets	328,000	72,000
Current deferred tax liabilities	'	'
Prepaid expenses	-226,000	-60,000
Total current deferred tax liabilities	-226,000	-60,000
Non-current deferred tax liabilities	'	'
Fixed assets	-102,000	-12,000
Total non-current deferred tax liabilities	-102,000	-12,000
Total deferred tax liability	-328,000	-72,000
Net deferred income tax assets (liabilities)	0	'
Federal	'	'
Income Taxes	'	'
Net operating loss carryforwards	$56,500,000	'

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Income Taxes	'	'
Uncertain tax positions	$0	'
Current portion of income tax expense (benefit)	'	'
U.S. federal	0	'
U.S. state	0	'
Deferred portion of income tax expense (benefit)	'	'
U.S. federal	0	'
U.S. state	0	'
Total income tax expense (benefit)	0	'
U.S. federal rate (as a percent)	-35.00%	'
Reconciliation of the actual income tax benefit (provision) and the tax computed by applying the U.S. federal rate	'	'
Tax benefit from continuing operations	-29,374	-2,214
State tax benefit from continuing operations	-1,008	-63
Non-deductible expenses	384	168
Derivative expense	665	'
Change in valuation allowance	80,549	1,765
Non-controlling interest	1,475	247
AWP step-up	52,625	'
Other	-66	-97
Total income tax expense (benefit)	$0	'

Subsequent_Events_Details1

Subsequent Events (Details) (USD $)

0 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

Apr. 25, 2013

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2012

Apr. 25, 2013

Mar. 31, 2013

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Jun. 26, 2013

Mar. 31, 2013

Aug. 01, 2012

Sep. 30, 2013

Mar. 31, 2013

Mar. 31, 2013

Aug. 01, 2012

Sep. 30, 2013

Mar. 31, 2013

Aug. 01, 2012

Mar. 31, 2013

Sep. 30, 2013

2-May-13

Apr. 15, 2013

Nov. 30, 2012

Sep. 30, 2013

Aug. 01, 2012

Mar. 07, 2013

Sep. 30, 2013

Mar. 31, 2013

Oct. 06, 2013

Apr. 25, 2013

Apr. 23, 2013

Jun. 26, 2013

Jun. 26, 2013

Jun. 26, 2013

Jun. 26, 2013

Apr. 15, 2013

2-May-13

Apr. 15, 2013

Apr. 15, 2013

Mar. 31, 2013

Apr. 15, 2013

Mar. 31, 2013

Apr. 15, 2013

Apr. 15, 2013

Jun. 26, 2013

Apr. 15, 2013

Apr. 15, 2013

Apr. 15, 2013

Jun. 26, 2013

Jun. 26, 2013

Jun. 26, 2013

Apr. 15, 2013

2-May-13

2-May-13

Apr. 15, 2013

Apr. 15, 2013

Apr. 15, 2013

Apr. 15, 2013

Apr. 15, 2013

Apr. 15, 2013

Apr. 15, 2013

Minimum

Investor Warrants

Investor Warrants

Investor Warrants

Investor Warrants

Series A Warrants

Series B Warrants

Series B Warrants

AWP

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Buffalo Management Llc

Buffalo Management Llc

Very Hungry and the Scott Reiman 1991 Trust

Bridge Loan

Promissory notes

Promissory notes

Promissory notes

Promissory notes

Apollo Notes

Apollo Notes

Apollo Notes

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Subsequent Events

Maximum

Maximum

Minimum

Minimum

Public Offering

Investor Warrants

AWP

AWP

AWP

Investor Warrants

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Affiliates of Apollo Global Management, LLC

Affiliates of Apollo Global Management, LLC

Affiliates of Apollo Global Management, LLC

Public Offering

Investor Warrants

Series A Warrants

Series B Warrants

Karlsson Group

Very Hungry and the Scott Reiman 1991 Trust

First Extension Agreement

First Extension Agreement

First Extension Agreement

First Extension Agreement

First Extension Agreement

First Extension Agreement

First Extension Agreement

First Karlsson Note Amendment

First Karlsson Note Amendment

First Karlsson Note Amendment

First Karlsson Note Amendment

Second Extension Agreement

Second Extension Agreement

Second Extension Agreement

Second Extension Agreement

Bridge Loan

Bridge Loan

Promissory notes

Apollo Notes

Approved Subordinated Debt

Approved Subordinated Debt

Approved Subordinated Debt

Approved Subordinated Debt

Approved Subordinated Debt

Forecast

Forecast

Public Offering

Public Offering

Public Offering

Investor Warrants

item

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Buffalo Management Llc

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Buffalo Management Llc

Investor Warrants

Very Hungry and the Scott Reiman 1991 Trust

First Karlsson Note Amendment

First Extension Agreement

First Karlsson Note Amendment

First Karlsson Note Amendment

First Karlsson Note Amendment

First Karlsson Note Amendment

First Karlsson Note Amendment

Investor Warrants

AWP

Prospect Global Resources Inc.

Maximum

Minimum

By August 1, 2014

Minimum

Investor Warrants

Karlsson Group

Affiliates of Apollo Global Management, LLC

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Karlsson Group

Maximum

Forecast

item

item

Maximum

By May 15, 2013

By June 17, 2013

By September 10, 2013

By August 1, 2014

Forecast

Forecast

Forecast

Forecast

Maximum

Subsequent Events

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ownership percentage acquired from Karlsson Group

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of debt instruments restructured

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

Aggregate principal amount of restructured debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$6,800,000

'

'

'

'

'

Tax gross-up

'

1,164,000

6,226,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Tax gross-up, including amounts owed prior to amendment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term of debt instrument from completion of Definitive Feasibility Study

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'12 months

'

'

'12 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'12 months

'

'

'

'

'

'

Interim principal payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30,000,000

'

'

'

'

'

'

Term of interim principal payment from completion of Definitive Feasibility Study

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'6 months

'

'

'

'

'

'

Principal payments payable expressed as percentage of net proceeds

'

'

40.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40.00%

40.00%

'

'

'

'

33.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal payments payable expressed as a percentage of gross proceeds

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

First gross proceeds after which principal payments payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9.00%

'

'

9.00%

'

11.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

9.00%

'

'

'

'

'

'

Interest accrual method

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Simple

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Compounding

'

'

'

'

'

'

Capital raising milestones

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25,000,000

'

'

'

'

'

'

'

'

'

5,000,000

7,000,000

18,000,000

15,000,000

Escrow deposit required

'

9,400,000

'

'

'

'

'

'

'

'

'

'

'

'

9,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

9,200,000

'

'

12,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Capital raised, a portion of which is required to be deposited into escrow

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30,000,000

'

'

24,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Additional borrowings allowed before the First Payment Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

Additional borrowings allowed after the First Payment Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

Cure period for payment default

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'15 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cure period for non-payment default

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'30 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cure and notice period for non-monetary defaults

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capital requirement for assignment of debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30,000,000

'

30,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of royalty interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

Royalty cap eliminated

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

75,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of common stock that can be purchased against warrants (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

52,409

'

2,409,402

'

'

'

'

'

'

'

'

'

'

'

'

'

833,334

833,334

'

'

'

'

'

112,117

'

'

'

'

'

'

'

'

'

60,000

'

'

'

'

'

'

'

'

'

'

Exercise price (in dollars per share)

'

'

'

'

'

$212.50

$150

$150

$4.05

$4.05

$6

$6

'

'

'

'

$212.50

'

'

'

$130

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$6

$6

$12.50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$6

'

$15

$15

'

'

'

'

'

'

'

Legal fees and expenses reimbursed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

125,000

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of membership interests pledged for debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of ownership interest held

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Royalty as a percentage of gross sales granted

'

'

'

'

'

'

'

'

'

'

'

'

'

2.00%

'

'

'

'

15.00%

15.00%

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15.00%

15.00%

'

'

'

'

'

'

'

'

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

Extension term of royalty granted as a percentage of gross sales

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'6 months

'

'

'

'

'

'

'

'

'

'

'

'

Attorneys' fees and costs associated with consummation of the Extension Agreement and related agreements payable

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

275,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interim principal payment eliminated

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of additional proceeds required to place in escrow

'

0.5

'

'

'

'

'

'

'

'

'

'

'

'

0.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.5

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from public offering placed into escrow

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,100,000

'

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from public offering

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Remaining escrow obligation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Number of wells on which the complete total depth milestone is required

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8

'

'

'

'

'

'

'

'

'

'

'

Exercise period

'

'

'

'

'

'6 years 2 months 12 days

'

'1 month 6 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

Percentage of outstanding capital stock issuable to Buffalo

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of equity market capitalization redeemable as consideration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of consecutive business days for which the bid price of common stock closed below the minimum $1.00 per share requirement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'30 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Bid price per share amount required for continued inclusion on the Nasdaq Capital Market based in Listing Rule (in dollar per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of calendar days to regain compliance rules related to minimum bid price per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'180 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Market value required for continued inclusion on the Nasdaq Capital Market based on Listing Rule

35,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

35,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of consecutive business days for which the market value of listed securities has fallen below the $35 million minimum requirement for continued listing

'

'

'

'

'30 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'30 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of calendar days to regain compliance rules related to minimum market value

'180 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'180 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

'

'

'

'

'

Amount of unsecured subordinated promissory notes exchanged

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$6,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$5,500,000

'

'

'

'

'

'

'

Number of related parties that entity borrowed from

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Units issued in public offering

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

833,334

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock issued in public offerings (in shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,500

'

'

833,334

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, par value (in dollars per share)

'

$0.00

$0.00

$0.00

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.00

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Public offering price in an underwritten public offering (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of warrants under an option exercised by the underwriter

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23,464

1

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price under an option exercised by the underwriter (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.01

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restatement_Details1

Restatement (Details) (USD $)	0 Months Ended	3 Months Ended						6 Months Ended				8 Months Ended		9 Months Ended	12 Months Ended				20 Months Ended		23 Months Ended	26 Months Ended	29 Months Ended	32 Months Ended		38 Months Ended
	Sep. 04, 2013	Sep. 30, 2013		Dec. 31, 2012	Sep. 30, 2012		Jun. 30, 2012	Sep. 30, 2013		Sep. 30, 2012		Mar. 31, 2011	Mar. 31, 2011	Dec. 31, 2012	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2012		Jun. 30, 2012	Sep. 30, 2012	Dec. 31, 2012	Mar. 31, 2013		Sep. 30, 2013
Restatement	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Reverse stock split	0.02	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
ASSETS	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Mineral properties	'	$13,690,000		$12,190,000	$12,190,000		$12,190,000	$13,690,000		$12,190,000		'	'	$12,190,000	$13,690,000		$12,091,000		$12,091,000		$12,190,000	$12,190,000	$12,190,000	$13,690,000		$13,690,000
Total noncurrent assets	'	14,884,000		12,963,000	12,792,000		12,494,000	14,884,000		12,792,000		'	'	12,963,000	14,787,000		12,253,000		12,253,000		12,494,000	12,792,000	12,963,000	14,787,000		14,884,000
Total assets	'	18,097,000		23,750,000	24,758,000		14,194,000	18,097,000		24,758,000		'	'	23,750,000	17,007,000		24,407,000		24,407,000		14,194,000	24,758,000	23,750,000	17,007,000		18,097,000
SHAREHOLDER'S DEFICIT	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Common stock	'	4,000	[1]	1,000	'		0	4,000	[1]	'		'	'	1,000	1,000	[1]	'		'		0	'	1,000	1,000	[1]	4,000	[1]
Additional paid-in capital	'	37,330,000	[1]	29,219,000	-3,416,000		86,758,000	37,330,000	[1]	-3,416,000		'	'	29,219,000	30,335,000	[1]	91,997,000	[1]	91,997,000	[1]	86,758,000	-3,416,000	29,219,000	30,335,000	[1]	37,330,000	[1]
Losses accumulated in exploration stage	'	-177,598,000	[1]	-143,163,000	-109,077,000		-86,971,000	-177,598,000	[1]	-109,077,000		'	'	-143,163,000	-160,254,000	[1]	-80,400,000	[1]	-80,400,000	[1]	-86,971,000	-109,077,000	-143,163,000	-160,254,000	[1]	-177,598,000	[1]
Total shareholder's deficit - Prospect Global Resources, Inc.	'	'		-113,944,000	-112,492,000		789,000	'		-112,492,000		'	'	-113,944,000	-129,918,000	[1]	11,597,000	[1]	11,597,000	[1]	789,000	-112,492,000	-113,944,000	-129,918,000	[1]	'
Non-controlling interest	'	'		'	'		3,976,000	'		'		'	'	'	'		7,234,000	[1]	7,234,000	[1]	3,976,000	'	'	'		'
Total shareholder's equity	'	-140,264,000	[1]	-113,944,000	-112,492,000		4,765,000	-140,264,000	[1]	-112,492,000		-4,762,000	-4,762,000	-113,944,000	-129,918,000	[1]	18,831,000	[1]	18,831,000	[1]	4,765,000	-112,492,000	-113,944,000	-129,918,000	[1]	-140,264,000	[1]
Total liabilities and shareholder's deficit	'	18,097,000		23,750,000	24,758,000		14,194,000	18,097,000		24,758,000		'	'	23,750,000	17,007,000		24,407,000	[1]	24,407,000	[1]	14,194,000	24,758,000	23,750,000	17,007,000		18,097,000
Consolidated Statement of Operations	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Exploration	'	2,859,000		5,646,000	5,802,000		5,568,000	4,071,000		11,370,000		'	'	17,016,000	18,575,000		6,002,000		6,648,000		12,216,000	18,018,000	23,664,000	25,223,000		29,294,000
General and administrative	'	'		'	15,247,000		'	'		19,507,000		'	'	'	'		'		'		'	'	'	'		'
General and administrative	'	2,261,000		16,047,000	9,628,000		4,260,000	4,355,000		13,888,000		'	'	35,554,000	48,458,000		17,206,000		18,693,000		22,953,000	38,199,000	54,246,000	67,151,000		65,540,000
Off-take arrangement fee	'	'		7,751,000	'		'	'		'		'	'	7,751,000	7,751,000		'		'		'	'	7,751,000	7,751,000		'
Total expenses	'	6,432,000		29,444,000	21,049,000		9,828,000	13,039,000		30,877,000		'	'	60,321,000	74,784,000		23,208,000		25,341,000		35,169,000	56,217,000	85,661,000	100,125,000		113,164,000
Loss from operations	'	-6,432,000		-29,444,000	-21,049,000		-9,828,000	-13,039,000		-30,877,000		'	'	-60,321,000	-74,784,000		-23,208,000		-25,341,000		-35,169,000	-56,217,000	-85,661,000	-100,125,000		-113,164,000
Net loss	'	-18,361,000		-34,085,000	-22,920,000		-9,828,000	-17,344,000		-32,748,000		-17,209,000	-17,209,000	-66,833,000	-83,925,000		-66,957,000		-84,166,000		-93,994,000	-116,914,000	-150,999,000	-168,091,000		-185,435,000
Net loss attributable to non-controlling interest	'	'		'	813,000		3,257,000	'		4,070,000		'	'	4,069,000	4,071,000		3,391,000		3,767,000		7,024,000	7,837,000	7,837,000	7,837,000		7,837,000
Net loss attributable to Prospect Global Resources Inc.	'	-18,361,000		-34,085,000	-22,107,000		-6,571,000	-17,344,000		-28,678,000		'	'	-62,764,000	-79,854,000		-63,566,000		-80,399,000		-86,970,000	-109,077,000	-140,162,000	-160,254,000		-177,598,000
Loss per share (in dollars per share)	'	($6.77)	[1]	($26.50)	($20.21)	[1]	($8.32)	($8.24)	[1]	($30.41)	[1]	'	'	($59.32)	($69.14)	[1]	($113.51)	[1]	($174.40)		($172.22)	($189.70)	($218.66)	($223.82)	[1]	($152.06)	[1]
Operating activities:	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Net loss	'	-18,361,000		-34,085,000	-22,920,000		-9,828,000	-17,344,000		-32,748,000		-17,209,000	-17,209,000	-66,833,000	-83,925,000		-66,957,000		-84,166,000		-93,994,000	-116,914,000	-150,999,000	-168,091,000		-185,435,000
Services paid for with securities	'	'		'	'		'	538,000		455,000		'	'	4,547,000	4,653,000		2,064,000		'		'	'	6,928,000	7,033,000		7,572,000
Stock based compensation	'	'		'	'		'	175,000		5,063,000		'	'	15,227,000	16,239,000		9,717,000		'		'	20,400,000	24,945,000	25,957,000		20,165,000
Share based compensation and warrant expense	'	'		'	'		'	'		10,682,000		'	'	'	'		'		'		'	'	'	'		'
Accounts payable	'	'		'	'		2,156,000	'		2,099,000		'	'	1,418,000	2,179,000		70,000		'		2,829,000	2,771,000	2,090,000	2,850,000		'
Accrued liabilities	'	'		'	'		1,346,000	'		2,660,000		'	'	4,561,000	3,663,000		770,000		857,000		2,203,000	3,516,000	5,417,000	4,518,000		'
Net cash used in operating activities	'	'		'	'		-5,769,000	-10,222,000		-14,706,000		'	'	-28,091,000	-34,823,000		-11,349,000		-12,618,000		-17,887,000	-27,323,000	-40,708,000	-47,443,000		-57,665,000
Investing activities:	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Mineral properties	'	'		'	'		-98,000	'		-98,000		'	'	-98,000	-1,599,000		-1,043,000		-1,091,000		-1,189,000	-1,189,000	-1,190,000	-2,690,000		-2,690,000
Net cash used in investing activities	'	'		'	'		-5,247,000	-395,000		-494,000		'	'	-740,000	-2,618,000		-1,124,000		-1,180,000		-6,928,000	-1,674,000	-1,921,000	-3,796,000		-4,191,000
As Reported	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
ASSETS	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Mineral properties	'	45,140,000		35,991,000	29,036,000		20,067,000	45,140,000		29,036,000		'	'	35,991,000	39,994,000		13,468,000		13,468,000		20,067,000	29,036,000	35,991,000	39,994,000		45,140,000
Deferred fees	'	'		7,751,000	'		'	'		'		'	'	7,751,000	7,751,000		'		'		'	'	7,751,000	7,751,000		'
Total noncurrent assets	'	53,647,000		44,517,000	29,638,000		20,371,000	53,647,000		29,638,000		'	'	44,517,000	48,842,000		13,630,000		13,630,000		20,371,000	29,638,000	44,517,000	48,842,000		53,647,000
Total assets	'	56,860,000		55,304,000	41,604,000		22,071,000	56,860,000		41,604,000		'	'	55,304,000	51,062,000		25,784,000		25,784,000		22,071,000	41,604,000	55,304,000	51,062,000		56,860,000
SHAREHOLDER'S DEFICIT	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Common stock	'	'		73,000	55,000		39,000	'		55,000		'	'	73,000	73,000		40,000		40,000		39,000	55,000	73,000	73,000		'
Additional paid-in capital	'	44,119,000		34,265,000	1,275,000		86,719,000	44,119,000		1,275,000		'	'	34,265,000	35,641,000		91,957,000		91,957,000		86,719,000	1,275,000	34,265,000	35,641,000		44,119,000
Losses accumulated in exploration stage	'	-145,624,000		-116,727,000	-96,977,000		-83,032,000	-145,624,000		-96,977,000		'	'	-116,727,000	-131,577,000		-79,711,000		-79,711,000		-83,032,000	-96,977,000	-116,727,000	-131,577,000		-145,624,000
Total shareholder's deficit - Prospect Global Resources, Inc.	'	'		-82,390,000	-95,646,000		4,727,000	'		-95,646,000		'	'	-82,390,000	-95,863,000		12,285,000		12,285,000		4,727,000	-95,646,000	-82,390,000	-95,863,000		'
Non-controlling interest	'	'		'	'		7,915,000	'		'		'	'	'	'		7,923,000		7,923,000		7,915,000	'	'	'		'
Total shareholder's equity	'	-101,501,000		-82,390,000	-95,646,000		12,642,000	-101,501,000		-95,646,000		'	'	-82,390,000	'		20,208,000		20,208,000		12,642,000	-95,646,000	-82,390,000	'		-101,501,000
Total liabilities and shareholder's deficit	'	56,860,000		55,304,000	41,604,000		22,071,000	56,860,000		41,604,000		'	'	55,304,000	51,062,000		25,784,000		25,784,000		22,071,000	41,604,000	55,304,000	51,062,000		56,860,000
Consolidated Statement of Operations	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Exploration	'	'		'	'		'	'		'		'	'	'	'		4,954,000		5,600,000		5,600,000	5,600,000	5,600,000	5,600,000		5,600,000
General and administrative	'	1,902,000		15,110,000	12,080,000		3,328,000	4,691,000		15,408,000		'	'	30,518,000	42,737,000		16,877,000		18,364,000		21,692,000	33,771,000	48,881,000	61,102,000		59,826,000
Total expenses	'	3,652,000		15,110,000	12,080,000		3,328,000	9,742,000		15,408,000		'	'	30,518,000	42,737,000		21,831,000		23,964,000		27,292,000	39,371,000	54,481,000	66,702,000		76,443,000
Loss from operations	'	-3,652,000		-15,110,000	-12,080,000		-3,328,000	-9,742,000		-15,408,000		'	'	-30,518,000	-42,737,000		-21,831,000		-23,964,000		-27,292,000	-39,371,000	-54,481,000	-66,702,000		-76,443,000
Net loss	'	-15,581,000		-19,751,000	-13,951,000		-3,328,000	-14,047,000		-17,279,000		'	'	-37,030,000	-51,878,000		-65,580,000		-82,789,000		-86,117,000	-100,068,000	-119,819,000	-134,668,000		-148,715,000
Net loss attributable to non-controlling interest	'	'		'	6,000		7,000	'		13,000		'	'	12,000	12,000		2,702,000		3,078,000		3,085,000	3,091,000	3,091,000	3,090,000		3,090,000
Net loss attributable to Prospect Global Resources Inc.	'	-15,581,000		-19,751,000	-13,945,000		-3,321,000	-14,047,000		-17,266,000		'	'	-37,018,000	-51,866,000		-62,878,000		-79,711,000		-83,032,000	-96,977,000	-116,728,000	-131,578,000		-145,624,000
Loss per share (in dollars per share)	'	($5.75)		($15.36)	($12.75)		($4.20)	($6.69)		($18.31)		'	'	($34.99)	($44.91)		($112.28)		($172.91)		($164.42)	($168.66)	($182.10)	($183.77)		($124.71)
Operating activities:	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Net loss	'	-15,581,000		-19,751,000	-13,951,000		-3,328,000	-14,047,000		-17,279,000		'	'	-37,030,000	-51,878,000		-65,580,000		-82,789,000		-86,117,000	-100,068,000	-119,819,000	-134,668,000		-148,715,000
Services paid for with securities	'	'		'	'		'	'		'		'	'	672,000	776,000		'		'		'	'	3,052,000	3,156,000		3,695,000
Stock based compensation	'	'		'	'		'	1,103,000		'		'	'	12,649,000	13,794,000		'		'		'	17,946,000	22,367,000	23,512,000		18,648,000
Share based compensation and warrant expense	'	'		'	'		'	'		8,228,000		'	'	'	'		'		'		'	'	'	'		'
Deferred fees	'	'		'	'		'	'		'		'	'	-1,938,000	-2,287,000		'		'		'	'	-1,938,000	-2,288,000		-2,288,000
Accounts payable	'	'		'	'		434,000	'		-249,000		'	'	-1,773,000	497,000		'		'		1,106,000	423,000	-1,101,000	1,169,000		'
Accrued liabilities	'	'		'	'		258,000	'		980,000		'	'	1,781,000	-915,000		299,000		386,000		644,000	1,365,000	2,165,000	-531,000		'
Net cash used in operating activities	'	'		'	'		-2,079,000	-3,810,000		-5,719,000		'	'	-12,650,000	-17,645,000		-10,443,000		-11,712,000		-13,292,000	-17,430,000	-24,363,000	-29,360,000		-33,170,000
Investing activities:	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Mineral properties	'	'		'	'		-3,788,000	-6,412,000		-9,085,000		'	'	-15,539,000	-18,777,000		-1,949,000		-1,997,000		-5,784,000	-11,082,000	-17,535,000	-20,773,000		-27,185,000
Net cash used in investing activities	'	'		'	'		-8,937,000	-6,807,000		-9,481,000		'	'	-16,181,000	-19,796,000		-2,030,000		-2,086,000		-11,523,000	-11,567,000	-18,266,000	-21,879,000		-28,686,000
Previously capitalized costs	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Restatement	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Reduction in General and Administrative expenses	'	'		'	'		'	1,400,000		'		'	'	400,000	600,000		'		'		'	'	'	'		'
Previously capitalized costs | Adjustment	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
ASSETS	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Mineral properties	'	'		-23,801,000	-16,846,000		-7,877,000	'		-16,846,000		'	'	-23,801,000	-26,304,000		-1,377,000		-1,377,000		-7,877,000	-16,846,000	-23,801,000	-26,304,000		'
Deferred fees	'	'		-7,751,000	'		'	'		'		'	'	-7,751,000	-7,751,000		'		'		'	'	-7,751,000	-7,751,000		'
Total noncurrent assets	'	'		-31,554,000	-16,846,000		-7,877,000	'		-16,846,000		'	'	-31,554,000	-34,055,000		-1,377,000		-1,377,000		-7,877,000	-16,846,000	-31,554,000	-34,055,000		'
Total assets	'	'		-31,554,000	-16,846,000		-7,877,000	'		-16,846,000		'	'	-31,554,000	-34,055,000		-1,377,000		-1,377,000		-7,877,000	-16,846,000	-31,554,000	-34,055,000		'
SHAREHOLDER'S DEFICIT	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Common stock	'	'		-72,000	-55,000		-39,000	'		-55,000		'	'	-72,000	-72,000		-40,000		-40,000		-39,000	-55,000	-72,000	-72,000		'
Additional paid-in capital	'	'		-5,046,000	-4,691,000		39,000	'		-4,691,000		'	'	-5,046,000	-5,306,000		40,000		40,000		39,000	-4,691,000	-5,046,000	-5,306,000		'
Losses accumulated in exploration stage	'	'		-26,436,000	-12,100,000		-3,939,000	'		-12,100,000		'	'	-26,436,000	-28,677,000		-688,000		-688,000		-3,939,000	-12,100,000	-26,436,000	-28,677,000		'
Total shareholder's deficit - Prospect Global Resources, Inc.	'	'		-31,554,000	-16,846,000		-3,938,000	'		-16,846,000		'	'	-31,554,000	-34,055,000		-688,000		-688,000		-3,938,000	-16,846,000	-31,554,000	-34,055,000		'
Non-controlling interest	'	'		'	'		-3,939,000	'		'		'	'	'	'		-689,000		-689,000		-3,939,000	'	'	'		'
Total shareholder's equity	'	'		-31,554,000	-16,846,000		-7,877,000	'		-16,846,000		'	'	-31,554,000	'		-1,377,000		-1,377,000		-7,877,000	-16,846,000	-31,554,000	'		'
Total liabilities and shareholder's deficit	'	'		-31,554,000	-16,846,000		-7,877,000	'		-16,846,000		'	'	-31,554,000	-34,055,000		-1,377,000		-1,377,000		-7,877,000	-16,846,000	-31,554,000	-34,055,000		'
Consolidated Statement of Operations	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Exploration	'	'		5,646,000	5,802,000		5,568,000	'		11,370,000		'	'	17,016,000	18,575,000		1,048,000		1,048,000		6,616,000	12,418,000	18,064,000	19,623,000		'
General and administrative	'	'		937,000	3,167,000		932,000	'		4,099,000		'	'	5,036,000	5,721,000		329,000		329,000		1,261,000	4,428,000	5,365,000	6,049,000		'
Off-take arrangement fee	'	'		7,751,000	'		'	'		'		'	'	7,751,000	7,751,000		'		'		'	'	7,751,000	7,751,000		'
Total expenses	'	'		14,334,000	8,969,000		6,500,000	'		15,469,000		'	'	29,803,000	32,047,000		1,377,000		1,377,000		7,877,000	16,846,000	31,180,000	33,423,000		'
Loss from operations	'	'		-14,334,000	-8,969,000		-6,500,000	'		-15,469,000		'	'	-29,803,000	-32,047,000		-1,377,000		-1,377,000		-7,877,000	-16,846,000	-31,180,000	-33,423,000		'
Net loss	'	'		-14,334,000	-8,969,000		-6,500,000	'		-15,469,000		'	'	-29,803,000	-32,047,000		-1,377,000		-1,377,000		-7,877,000	-16,846,000	-31,180,000	-33,423,000		'
Net loss attributable to non-controlling interest	'	'		'	807,000		3,250,000	'		4,057,000		'	'	4,057,000	4,059,000		689,000		689,000		3,939,000	4,746,000	4,746,000	4,747,000		'
Net loss attributable to Prospect Global Resources Inc.	'	'		-14,334,000	-8,162,000		-3,250,000	'		-11,412,000		'	'	-25,746,000	-27,988,000		-688,000		-688,000		-3,938,000	-12,100,000	-23,434,000	-28,676,000		'
Loss per share (in dollars per share)	'	'		($11.14)	($7.46)		($4.12)	'		($12.10)		'	'	($24.33)	($24.23)		($1.23)		($1.49)		($7.80)	($21.04)	($36.56)	($40.05)		'
Operating activities:	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Net loss	'	'		-14,334,000	-8,969,000		-6,500,000	'		-15,469,000		'	'	-29,803,000	-32,047,000		-1,377,000		-1,377,000		-7,877,000	-16,846,000	-31,180,000	-33,423,000		'
Services paid for with securities	'	'		'	'		'	'		'		'	'	3,875,000	3,877,000		'		'		'	'	3,876,000	3,877,000		'
Stock based compensation	'	'		'	'		'	'		'		'	'	2,578,000	2,445,000		'		'		'	2,454,000	2,578,000	2,445,000		'
Share based compensation and warrant expense	'	'		'	'		'	'		2,454,000		'	'	'	'		'		'		'	'	'	'		'
Deferred fees	'	'		'	'		'	'		'		'	'	1,938,000	2,287,000		'		'		'	'	1,938,000	2,288,000		'
Accounts payable	'	'		'	'		1,722,000	'		2,348,000		'	'	3,191,000	1,682,000		'		'		1,723,000	2,348,000	3,191,000	1,681,000		'
Accrued liabilities	'	'		'	'		1,088,000	'		1,680,000		'	'	2,780,000	4,578,000		471,000		471,000		1,559,000	2,151,000	3,252,000	5,049,000		'
Net cash used in operating activities	'	'		'	'		-3,690,000	'		-8,987,000		'	'	-15,441,000	-17,178,000		-906,000		-906,000		-4,595,000	-9,893,000	-16,345,000	-18,083,000		'
Investing activities:	'	'		'	'		'	'		'		'	'	'	'		'		'		'	'	'	'		'
Mineral properties	'	'		'	'		3,690,000	'		8,987,000		'	'	15,441,000	17,178,000		906,000		906,000		4,595,000	9,893,000	16,345,000	18,083,000		'
Net cash used in investing activities	'	'		'	'		3,690,000	'		8,987,000		'	'	15,441,000	17,178,000		906,000		906,000		4,595,000	9,893,000	16,345,000	18,083,000		'
Expenses, net	'	'		'	'		'	'		'		'	'	$29,800,000	'		'		'		'	'	'	'		'
[1]	All common share amounts and computations using such amounts have been retroactively adjusted to reflect the September 4, 2013 1-for-50 reverse stock split.